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Mahadevan, US

Amitkumar Mahadevan, Freehold, NJ US

Patent application numberDescriptionPublished
20100220823Systems and Methods for Mitigating Self-Induced Far-End Crosstalk - Systems and methods for partial self-FEXT (far-end crosstalk) are described. One method, among others, comprises determining one or more instantaneous characteristics of an input signal, wherein the one or more instantaneous characteristics comprise one or more of amplitude of the input signal and an energy level of the input signal. The method further comprises selecting one or more disturbers to cancel according to the one or more instantaneous characteristics, wherein selecting one or more disturbers is performed on a per-DMT (discrete multi-tone) symbol basis.09-02-2010
20110058468Method and apparatus for crosstalk cancellation during SELT testing - A system for performing a single ended line test (SELT) of a selected subscriber line within a bundle of in-service subscriber lines each supporting frequency division multiplexed multi-tone modulated XDSL communications. The system comprises: a crosstalk cancellation module and a SELT module. The crosstalk cancellation module is coupled to the subscriber lines and configured to cancel crosstalk between the selected subscriber line under test and the in-service subscriber lines. The SELT module couples to the crosstalk cancellation module and is configured to coordinate SELT testing with the crosstalk cancellation module to cancel crosstalk between the selected subscriber line and the in-service subscriber lines during testing.03-10-2011
20110235759Systems and Methods for Implementing a Multi-Sensor Receiver in a DSM3 Environment - In accordance with one embodiment, a method is implemented in a vectored system for improving a signal-to-noise ratio (SNR) of a far end transmitted signal on a victim line in the system. The method comprises mitigating, by the vectored system, self-induced far-end crosstalk (self-FEXT) on the victim line based on self-FEXT mitigation coefficients and receiving, by a second sensor, information relating to at least one of: self-FEXT of the vectored system, external noise, and the far end transmitted signal. The method further comprises learning, at the second sensor, coefficients relating to self-FEXT coupling into the second sensor and removing self-FEXT from the second sensor based on the learned coefficients. Upon removal of self-FEXT from the second sensor, a linear combiner configured to combine information relating to the victim line and the second line is learned. The method further comprises applying the learned linear combiner and readjusting the self-FEXT mitigation coefficients to remove any residual self-FEXT on the victim line after application of the learned linear combiner.09-29-2011
20120020418REDUCED MEMORY VECTORED DSL - The memory storage, transmission and processing demands of a vectored DSL system are reduced by sampling a subset of DSL tones in the DSL tone range used in the vectored system. This data is smoothed (denoised) to further reduce the data's size, sacrificing some fidelity or precision as a result. Finally, lossless entropy coding or the like is performed to encode the FEXT cancellation data for storage and use. The resulting data is less likely to cause transmission bottlenecks in the vectored system, can be stored and used more efficiently for both on-chip and off-chip vectoring implementations, and can be readily updated in various ways.01-26-2012
20140056396SYSTEMS AND METHODS FOR IMPLEMENTING A MULTI-SENSOR RECEIVER IN A DSM3 ENVIRONMENT - In accordance with one embodiment, a method is implemented in a vectored system for improving a signal-to-noise ratio (SNR) of a far end transmitted signal on a victim line in the system. The method comprises mitigating, by the vectored system, self-induced far-end crosstalk (self-FEXT) on the victim line based on self-FEXT mitigation coefficients and receiving, by a second sensor, information relating to at least one of: self-FEXT of the vectored system, external noise, and the far end transmitted signal. The method further comprises learning, at the second sensor, coefficients relating to self-FEXT coupling into the second sensor and removing self-FEXT from the second sensor based on the learned coefficients. Upon removal of self-FEXT from the second sensor, a linear combiner configured to combine information relating to the victim line and the second line is learned.02-27-2014

Patent applications by Amitkumar Mahadevan, Freehold, NJ US

Amitkumar Mahadevan, Baltimore, MD US

Patent application numberDescriptionPublished
20090182536SYSTEM AND METHOD FOR ESTIMATING PROBABILITIES OF EVENTS - A dual adaptive importance-sampling system and method is provided that can estimate the probability of events by combining dual complementary importance-sampling simulations. The present invention exploits the ability to determine an optimal biased pdf using an iterative procedure that requires relatively little a priori knowledge of how to bias. Hence, the present invention is particularly suited for evaluating the BERs and/or WERs of coded communication and storage systems, and is generally applicable to arbitrarily chosen codes. When applied to coded communication and storage systems, the present invention provides a versatile technique for the fast and accurate estimation of BERs and WERs of FEC codes down to values of 1007-16-2009

Amitkumar Mahadevan, Edison, NJ US

Patent application numberDescriptionPublished
20110255586SYSTEMS AND METHODS FOR FREQUENCY DOMAIN REALIZATION OF NON-INTEGER FRACTIONALLY SPACED TIME DOMAIN EQUALIZATION - Various systems and methods are described for performing fractionally spaced time domain equalization (TEQ). One embodiment is a method implemented in a communication system for training a fractionally spaced time domain equalizer (TEQ). The method comprises performing an initialization phase, averaging a received signal in the system to reduce effects of noise in a channel, determining a channel estimate, and aligning an ideal reference signal with the received signal. The method further comprises updating a target response filter according to a non-integer multiple of a base sampling rate, determining an adaptation error based on useful information both inside and outside a Nyquist band of the TEQ, and updating the TEQ according to the adaptation error.10-20-2011
20120275591Systems and Methods for G.Vector Initialization - Methods, apparatuses (e.g., DSL system hardware, DSL systems, vectoring control entities), techniques, systems, etc. are used for initializing one or more DSL lines joining a vectored DSL line group operating in Showtime. A super-periodic orthogonal pilot sequence from a set of super-periodic orthogonal pilot sequences is assigned to each joining DSL line, wherein each such super-periodic orthogonal pilot sequence in the set has length L and is orthogonal to other sequences in the set over length T. These super-periodic orthogonal pilot sequences are used on the joining DSL lines to generate at least T sync-symbols worth of initialization data, which is processed to generate initialization data and FEXT mitigation coefficients for use when the joining DSL lines become part of the vectored DSL line group.11-01-2012
20150319276METHOD AND APPARATUS FOR DETECTING MISSING MICRO-FILTER - The present invention provides a method and apparatus to detect a missing micro-filter. In embodiments, the detection is performed by measuring the distortion caused by an unfiltered telephone device using a SELT (Single Ended Line Test) technique. According to certain aspects, the signal used to perform the distortion measurement is designed such that it causes minimal impact on vectored lines within the same cable. Embodiments of the invention first determines the estimated loop length, then uses the loop length to select a set of signal parameters that will be used to perform the distortion measurement. The parameters to be selected include transmit frequency band and PSD level. According to further aspects, embodiments of the invention include automatically running a missing filter test immediately following a line drop to determine if the line drop was caused by a missing micro-filter.11-05-2015

Patent applications by Amitkumar Mahadevan, Edison, NJ US

Anandi Mahadevan, Murrysville, PA US

Patent application numberDescriptionPublished
20150128947PORTABLE HANDHELD PRESSURE SUPPORT SYSTEM AND METHOD - The present disclosure pertains to a portable handheld pressure support system configured to deliver a pressurized flow of breathable gas to the airway of a subject. The pressure support system is configured to treat COPD and/or other patients suffering from dyspnea and/or other conditions. The pressure support system is configured to be small and lightweight so that a subject may carry the system and use the system as needed without requiring a device to be worn on the face. The present disclosure contemplates that the portable handheld pressure support system may be used to treat symptoms and/or conditions related to dyspnea, and/or for other uses. In one embodiment, the system comprises one or more of a pressure generator, a subject interface, one or more sensors, one or more processors, a user interface, electronic storage, a portable power source, a housing, a handle, and/or other components.05-14-2015
20150136129PORTABLE HANDHELD BLENDING GAS ENRICHED PRESSURE SUPPORT SYSTEM AND METHOD - The present disclosure pertains to a portable handheld pressure support system configured to deliver a blending gas enriched pressurized flow of breathable gas to the airway of a subject. The pressure support system is configured to treat patients suffering from dyspnea and/or other conditions. The therapy provided to dyspnea patients is configured to be used as needed by a subject to rapidly alleviate shortness of breath. The pressure support system is configured to be small and lightweight so that the subject may carry the system and use the system as needed without requiring a device to be worn on the face. In some embodiments, the system comprises one or more of a pressure generator, a subject interface, a blending gas inlet port, one or more sensors, a valve, one or more processors, a user interface, electronic storage, a portable power source, a housing, a handle, and/or other components.05-21-2015
20150283339HANDHELD DYSPNEA TREATMEENT DEVICE WITH DRUG AND GAS DELIVERY - A portable handheld pressure support system (10-08-2015

Anandi Mahadevan, Monroeville, PA US

Patent application numberDescriptionPublished
20140000611SYSTEMS AND METHODS FOR TREATING SLEEP APNEA01-02-2014
20140350429UPPER AIRWAY RESISTANCE MEASUREMENT DEVICE - A method of estimating the upper airway resistance of a patient using a gas delivery system includes delivering a flow of breathing gas to the patient through the patient circuit of the gas delivery system, superimposing an oscillatory pressure on the flow of breathing gas during an expiratory phase of the patient, determining a first amplitude of an oscillatory component of a gas pressure provided to the patient at an end of the expiratory phase, determining a second amplitude of an oscillatory component of a gas flow provided to the patient at the end of the expiratory phase, determining a first resistance value based on the ratio of the first amplitude to the second amplitude, and determining an upper airway resistance value based on the first resistance value.11-27-2014

Anandi Mahadevan, Akron, OH US

Patent application numberDescriptionPublished
20080262367GENERAL DIAGNOSTIC AND REAL-TIME APPLICATIONS OF DISCRETE HERMITE FUNCTIONS TO DIGITAL DATA - The present invention relates to general diagnostic and real-time applications of discrete Hermite functions to digital data. More specifically, the invention relates to methods and systems for the application of dilated discrete digital Hermite functions (DDHF) to biomedical data, for example, to extract features from digital signals, including but not limited to, ECGs, EMGs, EOGs, EEGs, and others, by expanding the measured signals using a computationally efficient technique. These digital Hermite functions form the basis for the new discrete Hermite transform, generated on a beat by beat basis, which provides information about the shape of the signals, such as that in the BCG artifact in an EEG or in an ECG interval, or any noise in any other electrical signal. An automated system and method for real-time interpretation of any abnormalities present in a digital biomedical signal is provided.10-23-2008

Anu Mahadevan, Westford, MA US

Patent application numberDescriptionPublished
20100152209Compounds for Modulating TRPV3 Function - The present application relates to compounds and methods for treating pain and other conditions related to TRPV3.06-17-2010
20110144135Compounds for Modulating TRPV3 Function - The present application relates to compounds and methods for treating pain and other conditions related to TRPV3.06-16-2011
20140155417COMPOUNDS FOR MODULATING TRPV3 FUNCTION - The present application relates to compounds and methods for treating pain and other conditions related to TRPV3.06-05-2014
20150299225COMPOUNDS FOR MODULATING TRPV3 FUNCTION - The present application relates to compounds and methods for treating pain and other conditions related to TRPV3.10-22-2015

Patent applications by Anu Mahadevan, Westford, MA US

Ashok Mahadevan, Alpharetta, GA US

Patent application numberDescriptionPublished
20090107982HEATED BREATHING CIRCUIT DETECTION - A heated breathing circuit detection system verifies the proper set up and connection of a breathing circuit to a heater unit of a humidification system. The detection system automatically detects that the breathing circuit is connected to the heater unit, and the nature of the heating circuit(s) thereof. In one embodiment, the resistance of the heating circuit(s) is determined and compared to an expected resistance or range of acceptable resistances to determine if the heater circuit(s) is properly or actually attached and properly operating. The humidification system also has the ability to determine the delivery mode of the breathing circuit, i.e., whether a single inspiratory limb, or both inspiratory and expiratory limbs, is connected to the heater unit.04-30-2009
20090113238POWER FAILURE MANAGEMENT FOR RESPIRATORY SYSTEM HEATER UNIT - A heater unit includes power failure management to detect disruptions in the electrical power supply, such as the AC supply, for the unit. The heater unit emits an audible alarm in response to detection of such a disruption, and may shut down the heater(s) and visuals display(s). The heater unit advantageously includes a power storage device, such as a super-capacitor, to temporarily power the electronic circuitry of the heater unit. Operating parameters, such as of a processor of the electronic circuitry, may be stored in a non-volatile memory response to the disruption, and recalled if the disruption terminates before the level of power has gotten too low to sustain reliable operation of the processor.04-30-2009

Boopathi Singalandapuram Mahadevan, Columbus, IN US

Patent application numberDescriptionPublished
20150377171SELECTIVE CYLINDER DEACTIVATION APPARATUS AND METHOD FOR HIGH POWER DIESEL ENGINES - Various embodiments relate to a method of operating an engine system with injectors having nozzle sac volume. The engine system may be a four-stroke, high power engine having a high-pressure common-rail injection system. A number of engine cylinders to fire is selected based on a fuel injection quantity per selected engine cylinder such that a nitrogen oxides (NO12-31-2015

Daruka Mahadevan, Tucson, AZ US

Patent application numberDescriptionPublished
20080221146INHIBITORS OF NUCLEOPHOSMIN (NPM) AND METHODS FOR INDUCING APOPTOSIS - Nucleophosmin inhibitors are disclosed which inhibit the multimerization of nucleophosmin and the biological activity of nucleophosmin, such as the ability of nucleophosmin to inhibit apoptosis and inhibit cellular differentiation. These small molecule inhibitors are useful for treating diseases and disorders, such as cancer associated with dysregulated nucleophosmin expression. Methods for identifying small molecule inhibitors of nucleophosmin involving multimerization sites for nucleophosmin are also disclosed. An exemplary small molecule inhibitor of nucleophosmin is NSC348884 which has the following chemical structure:09-11-2008
20090099165Protein Kinase Inhibitors - Protein kinase inhibitors are disclosed having utility in the treatment of protein kinase-mediated diseases and conditions, such as cancer. The compounds of this invention have the following structure:04-16-2009
20090143399Protein Kinase Inhibitors - Protein kinase inhibitors are disclosed having utility in the treatment of protein kinase-mediated diseases and conditions, such as cancer. The compounds of this invention have the following structure:06-04-2009
20110144066SMALL MOLECULE INHIBITORS OF THE PLECKSTRIN HOMOLOGY DOMAIN AND METHODS FOR USING SAME - Pleckstrin homology domain binding compounds, pharmaceutical compositions including such compounds, and methods for their use are described herein.06-16-2011
20110212929Protein Kinase Inhibitors - Protein kinase inhibitors are disclosed having utility in the treatment of protein kinase-mediated diseases and conditions, such as cancer. The compounds of this invention have the following structure:09-01-2011
20120039885COMPOSITION AND METHOD FOR CANCER TREATMENT - Anti-CEACAM6 antibodies and antibody fragments, nucleic acids encoding them, methods of their manufacture, and methods to treat cancer using these compounds are provided.02-16-2012
20130302303PROTEIN KINASE INHIBITORS - Protein kinase inhibitors are disclosed having utility in the treatment of protein kinase-mediated diseases and conditions, such as cancer. The compounds of this invention have the following structure:11-14-2013

Patent applications by Daruka Mahadevan, Tucson, AZ US

Daruka Mahadevan, Memphis, TN US

Patent application numberDescriptionPublished
20130184317SMALL MOLECULE INHIBITORS OF THE PLECKSTRIN HOMOLOGY DOMAIN AND METHODS FOR USING SAME - Pleckstrin homology domain binding compounds, pharmaceutical compositions including such compounds, and methods for their use are described herein.07-18-2013
20150126563SMALL MOLECULE INHIBITORS OF THE PLECKSTRIN HOMOLOGY DOMAIN AND METHODS FOR USING SAME - Pleckstrin homology domain binding compounds, pharmaceutical compositions including such compounds, and methods for their use are described herein.05-07-2015

Dave S. Mahadevan, Mesa, AZ US

Patent application numberDescriptionPublished
20080290430Stress-Isolated MEMS Device and Method Therefor - A stress-isolated MEMS device (11-27-2008

Dinesh Mahadevan, Rochester Hills, MI US

Patent application numberDescriptionPublished
20130153519Modular Solar Support Assembly - A solar tracker and more specifically to a modular support assembly for a solar tracker that allows reduced assembly and transportation costs.06-20-2013

Geetha Mahadevan US

Patent application numberDescriptionPublished
20080249469METHOD AND APPARATUS FOR ACTIVE CONTROL OF DRUG DELIVERY USING ELECTRO-OSMOTIC FLOW CONTROL - A substance delivery apparatus is disclosed. Embodiments of the substance delivery apparatus comprise a housing defining a reservoir containing the substance. At least one micro-needle is operably connected to the reservoir. A micro-pump is fluidically connected to the reservoir so that when the micro-pump is activated, the substance is directed from the reservoir, through the at least one micro-needle.10-09-2008

Jagannathan Mahadevan, Tulsa, OK US

Patent application numberDescriptionPublished
20120267109METHOD OF TREATING A FRACTURED WELL - This invention relates to a method of treating a tight gas well that has been fractured with a gel solution to increase the production of hydrocarbons. The gel solutions used for fracturing typically include an aqueous portion and a polymer material. Generally, the first step of the method is to apply a soak solution to the fractured formation to mix with the aqueous portion of the gel solution to increase the volatility of the aqueous portion. The next step is to apply a dry gas treatment to the tight gas well to remove the aqueous portion of the gel solution after the volatility has been increased.10-25-2012

Karthikeyan Mahadevan, Hermitage, TN US

Patent application numberDescriptionPublished
20140355019PRE-FLIGHT SYSTEM FOR PDF/VT - A method for validating a splitting operation accesses a document and a catalog tree. The method selects a subset of the total pages in the document. The method splits a section of branches from the catalog tree using a splitter in a user device. Each branch corresponds to a page included in the subset. The method processes the subset using the branches to generate split output pages. The method analyzes each split output page to determine if the file split correctly. In response to a split failure, the method determines if the split failure is related to one of a structure error and a metadata syntax error. In response to a correct split, the method provides the print job to an associated output device in communication with the user device.12-04-2014

Kumar Mahadevan, Sterling Heights, MI US

Patent application numberDescriptionPublished
20140346816VEHICLE FRAME RAIL AND PILLAR CONNECTION - A vehicle frame includes an outside rail section having an upper flange, a lower flange, and an inward facing cavity between the upper and lower flanges. An inside rail section is coupled along the upper and lower flanges of the outside rail section and has an outward facing cavity that aligns with the inward facing cavity to enclose an interior volume. A pair of hydroform tubes extending vertically through apertures at spaced longitudinal locations in the upper flange and engage a bottom surface of the inward cavity to define a pillar for supporting a vehicle roof.11-27-2014

Lakshman Mahadevan, Cordova, TN US

Patent application numberDescriptionPublished
20140024007PORTAL/DASHBOARD INTERFACE FOR TEACHER/STUDENT RELATIONSHIP MANAGEMENT AND TRADITION PRESERVATION WEBSITE - A virtual studio for managing the relationship between a teacher and their students where the teacher uses multiple customizable portals to communicate with and manage their students. The teacher is able to customize the portal on a per student basis. The virtual studio also enables the teacher to promote students to perform other roles in the studio and includes a comprehensive invoicing feature for billing purposes. The virtual studio also helps teachers share their lessons with other virtual studios.01-23-2014

Lakshminarayanan Mahadevan, Brookline, MA US

Patent application numberDescriptionPublished
20100170796In Vitro Microfluidic Model of Microcirculatory Diseases, and Methods of Use Thereof - One aspect of the invention relates to a microfluidic device which recreates important features of the human microcirculation on a microscope stage. In certain embodiments of the invention, the clinical scenario associated with ‘sickle cell crisis’ whereby blood vessels are occluded in various organs causing pain and tissue damage can be recreated. In certain embodiments, one can use a device of the invention to study the processes that lead to crisis, and screen therapies (such as small molecules) that might be used to prevent crisis. Further, certain embodiments of the invention allow one to study and screen therapies for a range of human blood disorders, such as hereditary spherocytosis, disorders of white blood cells, such as Waldenstrom's macroglobulinemia or leukocytosis, disorders of blood platelets and coagulation, such as hemophilia A and B, activated protein C resistance, and essential thrombocythemia.07-08-2010
20120072475MEASURING "CLOSENESS" IN A NETWORK - Closeness between nodes in a weighted network may be measured using an asymmetric generalization of classical Erdös numbers.03-22-2012

Mahesh Mahadevan US

Patent application numberDescriptionPublished
20110290639METHOD AND APPARATUS FOR PROVIDING BEAMS OF NANODROPLETS FOR HIGH SPUTTERING RATE OF INERT MATERIALS - A method for milling of a workpiece of inert material by nanodroplet beam sputtering includes the steps of providing a liquid; electrohydrodynamically atomizing the liquid to form charged nanodroplets; and directing the atomized charged nanodroplets onto the workpiece to selectively remove material. The method is used for broad-beam milling the workpiece of inert material, for precision micromachining and/or for three dimensionally profiling organic samples via secondary ion mass spectrometry. The liquid is electrosprayed in a cone-jet mode in a vacuum and average nanodroplet diameter, nanodroplet velocity, and molecular energy of the nanodroplets is adjusted by changing liquid flow rate and the acceleration voltage applied to the ionic liquid as it is atomized. Apparatus for performing the method are also included embodiments.12-01-2011
20120286149METHOD AND APPARATUS FOR PROVIDING BEAMS OF NANODROPLETS FOR HIGH SPUTTERING RATE OF INERT MATERIALS - A method for milling of a workpiece of inert material by nanodroplet beam sputtering includes the steps of providing aliquid; electrohydrodynamically atomizing the liquid to form charged nanodroplets; and directing the atomized charged nanodroplets onto the workpiece to selectively remove material. The method is used for broad-beam milling the workpiece of inert material, for precision micromachining and/or for three dimensionally profiling organic samples via secondary ion mass spectrometry. The liquid is electrosprayed in a cone-jet mode in a vacuum and average nanodroplet diameter, nanodroplet velocity, and molecular energy of the nanodroplets is adjusted by changing liquid flow rate and the acceleration voltage applied to the ionic liquid as it is atomized. Apparatus for performing the method are also included embodiments.11-15-2012

Megha V. Mahadevan, Laurel, MD US

Patent application numberDescriptionPublished
20120101475High Efficiency Auto-Injector - An auto-injector apparatus and associated methods utilizing specific dimensions and parameters of use for the auto-injector are provided for achieving increased effectiveness of the auto-injector device in delivering medicament into the patient's body, and in dispersion of the medicament from the initial injection site into the surrounding bodily tissues.04-26-2012
20150073383High Efficiency Auto-Injector - An auto-injector apparatus and associated methods utilizing specific dimensions and parameters of use for the auto-injector are provided for achieving increased effectiveness of the auto-injector device in delivering medicament into the patient's body, and in dispersion of the medicament from the initial injection site into the surrounding bodily tissues.03-12-2015

Perurmadom Ramaiyer Mahadevan US

Patent application numberDescriptionPublished
20090285793Novel thrombolytic enzyme and a process for its preparation - The invention relates to a thrombolytic enzyme referred to as Thrombinase having a molecular weight of 31,000 to 32,000. Such a thrombolytic enzyme can be used for dissolving blood clots. The process comprises culturing a filtrate of Bacillus sphaericus sero type H5a 5b, removing the cell, subjecting the cell supernatant to filtration, salting out the retentate, subjecting the precipitate to dialysis, reprecipitating the precipitate and then reconstituting in buffer and finally decolourizing, purifying and dialyzing.11-19-2009

Ramaswamy Mahadevan, Chapel Hill, NC US

Patent application numberDescriptionPublished
20080264464Temperature Control Including Integrated Thermoelectric Sensing and Heat Pumping Devices and Related Methods and Systems - A temperature control system may include a thermoelectric device, and a controller electrically coupled to the thermoelectric device. The controller may be configured to apply an AC signal to the thermoelectric device, and to sense an electrical characteristic of the thermoelectric device using the AC signal. The controller may also be configured to generate an electrical control signal to pump heat through the thermoelectric device responsive to sensing the electrical characteristic of the thermoelectric device using the AC signal. Related methods are also discussed.10-30-2008
20090205696Thermoelectric Heat Pumps Providing Active Thermal Barriers and Related Devices and Methods - An electronic device may include a heat generating component and a surface adjacent the heat generating component. A temperature of the heat generating component may be greater than a temperature of the surface adjacent the heat generating component during operation of the electronic device. A thermoelectric heat pump between the surface and the heat generating component may be configured to pump heat from a cold side of the thermoelectric heat pump adjacent the surface toward the heat generating component. Related methods are also discussed.08-20-2009
20100252087THERMOELECTRIC DEVICES INCLUDING THERMOELECTRIC ELEMENTS HAVING OFF-SET METAL PADS AND RELATED STRUCTURES, METHODS, AND SYSTEMS - A thermoelectric device may include a thermoelectric element including a layer of a thermoelectric material and having opposing first and second surfaces. A first metal pad may be provided on the first surface of the thermoelectric element, and a second metal pad may be provided on the second surface of the thermoelectric element. In addition, the first and second metal pads may be off-set in a direction parallel with respect to the first and second surfaces of the thermoelectric element. Related methods are also discussed.10-07-2010
20110132000Thermoelectric Heating/Cooling Structures Including a Plurality of Spaced Apart Thermoelectric Components - A thermoelectric heating/cooling structure may include a heat exchanger and a heat spreader spaced apart from the heat exchanger. In addition, a plurality of spaced apart thermoelectric components may be thermally coupled in parallel between the heat exchanger and the heat spreader. More particularly, each of the thermoelectric components may include a first header adjacent the heat exchanger, a second header adjacent the heat spreader, and a plurality of thermoelectric elements thermally coupled in parallel between the first and second headers. The first headers of the thermoelectric components may be spaced apart adjacent the heat exchanger, and the second headers of the thermoelectric components may be spaced apart adjacent the heat spreader.06-09-2011
20110220162Thermoelectric (TE) Devices/Structures Including Thermoelectric Elements with Exposed Major Surfaces - A thermoelectric structure may include a thermally conductive substrate, and a plurality of thermoelectric elements arranged on a surface of the thermally conductive substrate. Moreover, each thermoelectric element may be non-parallel and non-orthogonal with respect to the surface of the thermally conductive substrate. For example, each of thermoelectric elements may be a planar thermoelectric element, and a plane of each of the thermoelectric elements may be oriented obliquely with respect to the surface of the thermally conductive substrate.09-15-2011

Patent applications by Ramaswamy Mahadevan, Chapel Hill, NC US

Senthil Kumar Mahadevan, Sterling Heights, MI US

Patent application numberDescriptionPublished
20120261949Multi-Cornered Strengthening Members - A strengthening member for an automotive vehicle comprises an eight-cornered cross section including sides and corners. The sides comprise four straight sides and four curved sides. A length of each straight side ranges from about 10 mm to about 200 mm and a length of each curved side is about 10 mm to about 200 mm.10-18-2012
20130292968MULTI-CORNERED STRENGTHENING MEMBERS - A strengthening member for an automotive vehicle comprises an eight-cornered cross section including sides and corners. The sides comprise four straight sides and four curved sides. A length of each straight side ranges from about 10 mm to about 200 mm and a length of each curved side is about 10 mm to about 200 mm.11-07-2013

Shivkumar Mahadevan, Jacksonville, FL US

Patent application numberDescriptionPublished
20160054590METHODS AND APPARATUS TO FORM BIOCOMPATIBLE ENERGIZATION PRIMARY ELEMENTS FOR BIOMEDICAL DEVICES - Methods and apparatus to form biocompatible energization elements are described. In some embodiments, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some embodiments, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.02-25-2016
20160056440BIOCOMPATIBLE RECHARGABLE ENERGIZATION ELEMENTS FOR BIOMEDICAL DEVICES - Methods and apparatus to form biocompatible energization elements are described. In some embodiments, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some embodiments, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.02-25-2016
20160056498METHODS OF FORMING BIOCOMPATIBLE RECHARGABLE ENERGIZATION ELEMENTS FOR BIOMEDICAL DEVICES - Methods and apparatus to form biocompatible energization elements are described. In some embodiments, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some embodiments, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.02-25-2016

Shivkumar Mahadevan, Orange Park, FL US

Patent application numberDescriptionPublished
20090004288STABILIZED OPHTHALMIC SOLUTIONS - The present invention relates to stabilized ophthalmic solutions comprising at least one peroxide. In one embodiment, the present invention relates to an ophthalmic solution comprising a pH between about 6 and about 8 and about 50 to about 1000 ppm hydrogen peroxide and about 0.005 wt % (50 ppm) to about 0.05 wt % (500 ppm) at least one salt of diethylenetriamine pentaacetic acid selected from the group consisting of calcium salts of diethylenetriamine pentaacetic acid, zinc salts of diethylenetriamine pentaacetic acid and mixed calcium/zinc salts of diethylenetriamine pentaacetic acid.01-01-2009
20090072206OPHTHALMIC DEVICES COMPRISING PHOTOCHROMIC MATERIALS HAVING EXTENDED PI-CONJUGATED SYSTEMS - Various non-limiting embodiments disclosed herein relate to ophthalmic devices comprising photochromic materials having extended pi-conjugated systems. For example, various non-limiting embodiments disclosed herein provide a photochromic material, such as an indeno-fused naphthopyran, which comprises a group that extends the pi-conjugated system of the indeno-fused naphthopyran bonded at the 11-position of thereof. Further, the photochromic materials according to certain non-limiting embodiments disclosed herein may display hyperchromic absorption of electromagnetic radiation as compared to conventional photochromic materials and/or may have a closed-form absorption spectrum that is bathochromically shifted as compared to conventional photochromic materials. Other non-limiting embodiments relate to methods of making the ophthalmic devices comprising photochromic materials.03-19-2009
20090168014LASER ENHANCED LENS - This invention discloses methods and apparatus for modifying a silicone contact lens via laser ablation and a resulting modified lens. In some embodiments a lens is ablated in a hydrated state. A lens may also be ablated in an environment of decreased oxygen content.07-02-2009
20090239775OPHTHALMIC SOLUTIONS DISPLAYING IMPROVED EFFICACY - The present invention relates to ophthalmic compositions comprising a pH between about 6 and about 8 and about 50 to about 1000 ppm hydrogen peroxide, about 100 ppm to about 2000 ppm of at least one chlorite compound and about 20 to 100 ppm of at least one saturated, polymeric quaternium salt. The ophthalmic compositions of the present invention display improved antifungal efficacy against 09-24-2009
20090324691METHODS AND OPHTHALMIC DEVICES USED IN THE TREATMENT OF OCULAR ALLERGIES - Ophthalmic devices containing anti-allergic agents and methods of preparing the same are disclosed herein.12-31-2009
20100151123WETTABLE HYDROGELS COMPRISING ACYCLIC POLYAMIDES - The present invention relates to biomedical devices, and particularly contact lenses comprising a polymer having entangled therein at least one acyclic polyamide.06-17-2010
20110139995METHODS AND DEVICES TO TEST DIFFUSION RATES OF OCULAR DRUG DELIVERY SYSTEMS - Methods of detecting the discharge and uptake rates of ophthalmic lenses containing pharmaceutical agents are disclosed herein.06-16-2011
20110181835LASER ENHANCED LENS - This invention discloses methods and apparatus for modifying a silicone contact lens via laser ablation and a resulting modified lens. In some embodiments a lens is ablated in a hydrated state. A lens may also be ablated in an environment of decreased oxygen content.07-28-2011
20110201596Methods for Providing Oxidatively Stable Ophthalmic Compositions - This invention relates to a process for improving the stability of an ophthalmically compatible solution comprising at least one oxidatively unstable ophthalmic compound.08-18-2011
20110275734NON-REACTIVE, HYDROPHILIC POLYMERS HAVING TERMINAL SILOXANES AND METHODS FOR MAKING AND USING THE SAME - The present invention relates to compositions comprising at least one stable, near-monodisperse, non-reactive hydrophilic polymer comprising in said polymer's backbone, a hydrophilic segment having a degree of polymerization of about 10 to about 1000, and a linear silicone segment at least one terminal end of said non-reactive hydrophilic polymer, wherein said silicone segment comprises between about 6 and about 200 siloxy units, and said non-reactive hydrophilic polymer is associated, via the linear silicone block with a silicone hydrogel. The non-reactive hydrophilic polymers may be incorporated into the formulation from which the silicone hydrogel is made or may be contacted with the silicone hydrogel post formation.11-10-2011
20110294914WETTABLE HYDROGELS COMPRISING ACYCLIC POLYAMIDES - The present invention relates to biomedical devices, and particularly contact lenses comprising a polymer having entangled therein at least one acyclic polyamide.12-01-2011
20120277444SYNTHESIS OF HYDROXYALKYL AMIDES FROM ESTERS - Hydroxyamides are synthesized from esters. A process of making hydroxyalkyl amides comprises: reacting an ester with a hydroxyalkyl amine having the formula H11-01-2012
20120283353MEDICAL DEVICES HAVING HOMOGENEOUS CHARGE DENSITY AND METHODS FOR MAKING SAME - The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.11-08-2012
20130175722PROCESS FOR MAKING OPHTHALMIC LENSES - The present invention relates to aqueous processes for the production of silicone hydrogel contact lenses.07-11-2013
20130184372SILICONE POLYMERS COMPRISING SULFONIC ACID GROUPS - The present invention relates to a silicone polymer comprising a sulfonic acid component formed from reactive components comprising (i) at least one silicone component and (ii) at least one sulfonic acid-containing component, wherein the sulfonic acid-containing component is comprised of a non-polymerizable, hydrophobic cation and a polymerizable sulfonic acid.07-18-2013
20130203812IONIC SILICONE HYDROGELS COMPRISING PHARMACEUTICAL AND/OR NUTRICEUTICAL COMPONENTS AND HAVING IMPROVED HYDROLYTIC STABILITY - The present invention relates to ionic silicone hydrogel polymers displaying improved thermal stability. More specifically, the present invention relates to a polymer formed from reactive components comprising at least one silicone component and at least one ionic component comprising at least one anionic group. The polymers of the present invention display good thermal stability and desirable protein uptake.08-08-2013
20130203813MEDICAL DEVICES HAVING HOMOGENEOUS CHARGE DENSITY AND METHODS FOR MAKING SAME - The present invention relates to ionic silicone hydrogel polymers comprising at least one pharmaceutical or nutriceutical component and displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.08-08-2013
20130217620IONIC SILICONE HYDROGELS - The present invention relates to ionic silicone hydrogel contact lenses which comprise at least one pharmaceutical or nutriceutical component and are formed from reaction mixtures comprising a mixture of slow-reacting hydrophilic monomers, including at least one slow-reacting ionic monomer, at least one silicone-containing component and at least one hydroxyl-containing component, wherein the ratio of the slow-reacting hydrophilic component half lives to the silicone-containing component half life is at least 2.08-22-2013
20130341811LENS COMPRISING LOW AND HIGH MOLECULAR WEIGHT POLYAMIDES - The present invention relates to a contact lens formed from components including (i) at least one silicone component, (ii) at least one low molecular weight polyamide having a weight average molecular weight of less than 200,000, and (iii) at least one high molecular weight polyamide having a weight average molecular weight of greater than 200,000, wherein the low molecular weight polyamide does not contain a reactive group.12-26-2013
20130345364METHOD OF MAKING SILICONE CONTAINING CONTACT LENS WITH REDUCED AMOUNT OF DILUENTS - The present invention relates to a method of manufacturing a contact lens including the steps of: (i) adding reactive components to a mold, wherein the reactive components comprise (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15,000 g/mole and (b) at least one mono-ether terminated, mono-methacrylate terminated polyethylene glycol having a weight average molecular weight from about 200 to about 10,000 g/mole; (ii) curing the reactive components within the mold to form the contact lens; and (iii) removing the contact lens from said mold.12-26-2013
20140011843METHODS FOR STABILIZING OXIDATIVELY UNSTABLE COMPOSITIONS - Ophthalmic compositions and methods of preparing such compositions are disclosed.01-09-2014
20140275434SILICONE-CONTAINING CONTACT LENS HAVING REDUCED AMOUNT OF SILICON ON THE SURFACE - The present invention relates to a method of reducing the amount of silicon on a surface of a contact lens, wherein the method includes reacting the surface of a contact lens containing at least one silicone component with a fluoride reagent.09-18-2014
20140329859IONIC SILICONE HYDROGELS COMPRISING PHARMACEUTICAL AND/OR NEUTICEUTICAL COMPONENTS AND HAVING IMPROVED HYDROLYTIC STABILITY - The present invention relates to ionic silicone hydrogel polymers displaying improved thermal stability. More specifically, the present invention relates to a polymer formed from reactive components comprising at least one silicone component and at least one ionic component comprising at least one anionic group. The polymers of the present invention display good thermal stability and desirable protein uptake.11-06-2014
20150185365MEDICAL DEVICES HAVING HOMOGENEOUS CHARGE DENSITY AND METHODS FOR MAKING SAME - The present invention relates to ionic silicone hydrogel polymers comprising at least one pharmaceutical or nutriceutical component and displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.07-02-2015
20150198744POLYMERS COMPRISING SULFONIC ACID GROUPS - The present invention relates to a polymers and hydrogels comprising a sulfonic acid component formed from reactive components comprising (i) at least one hydrophobic monomer and (ii) at least one sulfonic acid-containing component, wherein the sulfonic acid-containing component is comprised of a salt formed by a non-polymerizable, hydrophilic base and a polymerizable sulfonic acid. One or more embodiments provide that the at least one hydrophobic monomer comprises a silicone component.07-16-2015
20150241601OPHTHALMIC DEVICES COMPRISING PHOTOCHROMIC MATERIALS WITH REACTIVE SUBSTITUENTS - Various non-limiting embodiments of the present disclosure relate to ophthalmic devices comprising photochromic materials comprising a reactive substituent. For example, the present disclosure contemplates ophthalmic devices comprising photochromic materials, such as photochromic naphthopyrans and indeno-fused naphthopyrans having a reactive substituent comprising a reactive moiety linked to the photochromic naphthopyran by one or more linking groups. In certain non-limiting embodiments, the reactive moiety comprises a polymerizable moiety. In other non-limiting embodiments, the reactive moiety comprises a nucleophilic moiety. Other non-limiting embodiments of the present disclosure relate to methods of making the photochromic ophthalmic device, wherein the photochromic ophthalmic devices comprise the photochromic naphthopyrans described herein.08-27-2015
20150378057MEDICAL DEVICES HAVING HOMOGENEOUS CHARGE DENSITY AND METHODS FOR MAKING SAME - The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.12-31-2015
20160054589METHODS AND APPARATUS TO FORM SEPARATORS FOR BIOCOMPATIBLE ENERGIZATION ELEMENTS FOR BIOMEDICAL DEVICES - Methods and apparatus to form biocompatible energization elements are described. In some examples, the methods and apparatus to form the biocompatible energization elements involve forming cavities composing active cathode chemistry. The active elements of the cathode and anode are sealed with a biocompatible material. In some examples, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.02-25-2016
20160056494METHODS TO FORM BIOCOMPATIBLE ENERGIZATION ELEMENTS FOR BIOMEDICAL DEVICES COMPRISING LAMINATES AND DEPOSITED SEPARATORS - Methods and apparatus to form biocompatible energization elements are described. In some examples, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry and depositing separators within a laminate structure of the battery. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some examples, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.02-25-2016

Patent applications by Shivkumar Mahadevan, Orange Park, FL US

Varsha Mahadevan, Sammamish, WA US

Patent application numberDescriptionPublished
20090172651CREATING AND USING DELTAS TO MODIFY EXISTING COMPUTER CODE - Aspects of the subject matter described herein relate to creating and using deltas to modify existing computer code. In aspects, computer code may be translated into a higher level language to make it easier for a software developer to modify the computer code. The translated computer code may be presented by an editing tool that presents a user interface that allows changes to be made to the translated computer code. A delta engine may then determine a delta that indicates the changes to perform on the existing computer code to create computer code that would result from compiling the translated computer code as changed via the editing tool. Later, this delta may be used to change the existing computer code after it has been loaded to add or change debugging hooks or other features of the computer code.07-02-2009

Viswanath Mahadevan, Copley, OH US

Patent application numberDescriptionPublished
20090312460Copolymer Admixture System for Workability Retention of Cementitious Compositions - A non-ionic polyether-polyester copolymer for extending workability to a cementitious mixture containing hydraulic cement and water, wherein the copolymer includes residues of at least the following monomers: 12-17-2009
20100273952CONTROLLED POLYMERIZATION - The present invention discloses an emulsion polymerization process that comprises: (1) preparing an aqueous polymerization medium which is comprised of (a) at least one monomer, (b) a polymerization control agent, and an emulsifier, wherein the emulsifier is prepared in-situ within the aqueous polymerization medium; and (2) initiating polymerization of said monomer within the aqueous polymerization medium. The subject invention more specifically reveals an emulsion polymerization process that comprises: (1) preparing a monomer solution which is comprised of (a) at least one monomer, (b) a conjugate acid of a surfactant with a pK10-28-2010

Patent applications by Viswanath Mahadevan, Copley, OH US

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