Jin, MI
Curtis Jin, Ann Arbor, MI US
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20150285739 | Methods for Increasing Transmission Through Scattering Random Media - The method, system, and computer-readable medium increase transmission of waves through a highly scattering random medium. Transmission is increased by iteratively refining wavefronts using measurements of the backscatter wavefronts resulting from transmission of waves into the medium. The process of double phase conjugation by time-reversing a wavefront, transmitting the time-reversed wavefront into the medium, and time-reversing the reversing backscatter wavefront is leveraged to implement the method in a physical system using a phase conjugate mirror. In an embodiment, transmission may be increased by phase-only modulation of the wavefronts. In an embodiment, the invention may be used to focus transmission through the medium to a location opposite the wave source. | 10-08-2015 |
Jing Jin, Midland, MI US
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20100176059 | ION EXCHANGE RESINS COMPRISING INTERPENETRATING POLYMER NETWORKS AND THEIR USE IN CHROMIUM REMOVAL - The invention includes ion exchange resins and their use in the removal of chromium from water. In one embodiment, the invention comprises a method for removing chromium from a water source by contacting the water with an ion exchange resin, wherein the ion exchange resin comprises particles of a crosslinked copolymer comprising: an interpenetrating polymer network (IPN) of at least two polymer components each having a styrenic content greater than 50 molar percent, and a quaternary ammonium functionality. | 07-15-2010 |
20110250503 | BATTERY ELECTROLYTE SOLUTIONS CONTAINING AROMATIC PHOSPHORUS COMPOUNDS - A battery electrolyte solution contains from 0.01 to 80% by weight of an aromatic phosphorus compound. The aromatic phosphorus compound provides increased thermal stability for the electrolyte, helping to reduce thermal degradation, thermal runaway reactions and the possibility of burning. The aromatic phosphorus compound has little adverse impact on the electrical properties of the battery, and in some cases actually improves battery performance. | 10-13-2011 |
Norman Luwei Jin, Rochester Hills, MI US
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20110273142 | Parallel Boost Unity Power Factor High Power Battery Charger - A high power battery charger includes a full bridge DC/DC converter as its main converter following a low frequency diode rectifier bridge connected to the power grid and followed by a high frequency diode rectifier bridge to charge the battery. Because the battery negates charging voltage less than that of itself, the conduction angle of the charging current dramatically drops when the battery voltage increases. The small conduction angle of the charger raises peak current and lowers power factor. An active power factor correction circuit for a high power charger consists of a boost DC/DC converter placed in conjunction with the main full bridge DC/DC converter. The present invention is a new charger topology that alters the positioning and control of the power factor correction circuit, minimizing the impact of the required additional power factor correction booster on the high power charger's overall efficiency, cost, weight and size. | 11-10-2011 |
20120038349 | Triple Hall Effect Sensor Absolute Angular Encoder - The present invention is an array of three Hall Effect sensors placed at specific positions around a permanent magnet attached to a rotor or a magnetic rotor. The purpose of an absolute encoder is to provide the precise angular position of the rotor at any time. A magnetic absolute encoder uses sensors that read magnetic field values. The present invention is a novel design in the field of absolute encoders that increases encoder accuracy and resolution while avoiding the high cost that accompanies sophisticated sensors. This invention is a simple, effective and affordable solution to collect and process sensor information to determine rotor position. The position of the rotor can be determined to an accuracy of one degree. | 02-16-2012 |
20120140529 | Energy Recirculation and Active Clamping to Improve Efficiency of Flyback or Push Pull DC to DC Converters - The present invention is a new circuit topology to improve the efficiency of a flyback or push-pull converter or any other DC/DC converter that incorporates a transformer and whose switching device's active node (drain for MOSFETs and collector for IGBTs) has no direct energy releasing path to the power supply. The present invention uses an auxiliary DC/DC converter separate from the main DC/DC converter to reroute the parasitic energy stored in the transformer's or inductor's leakage inductance, allowing for the output of the main DC/DC converter to be augmented with the energy that would otherwise be lost. The energy stored in the leakage inductance is converted and redirected to either the load side or the power supply side of the main DC/DC converter in a series or a parallel configuration. The present invention significantly increases the overall efficiency of the system by eliminating the power loss. | 06-07-2012 |
20120170325 | High Efficiency Solar Wind Inverter With Hybrid DCDC Converter - The present invention is a new design topology for solar/wind inverters using a new hybrid DC/DC converter design. This hybrid converter topology eliminates a difficult design compromise between lowering the minimum input voltage to harvest more solar/wind energy and achieving high power conversion efficiency when the input voltage is high in a conventional solar/wind inverter design. This invention uses both a forward converter and a flyback converter to deliver superior performance over a design that only uses one of the two converter topologies. | 07-05-2012 |
Qiming Jin, Ann Arbor, MI US
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20080317816 | POROUS OBJECTS HAVING IMMOBILIZED ENCAPSULATED BIOMOLECULES - A porous object includes a porous material having internal pore surfaces and external pore surfaces. Releasing material encapsulated biomolecules are immobilized on at least one of the internal pore surfaces, at least one of the external pore surfaces, or combinations thereof. | 12-25-2008 |
Rong Jin, Okemos, MI US
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20100250523 | SYSTEM AND METHOD FOR LEARNING A RANKING MODEL THAT OPTIMIZES A RANKING EVALUATION METRIC FOR RANKING SEARCH RESULTS OF A SEARCH QUERY - An improved system and method for learning a ranking model that optimizes a ranking evaluation metric for ranking search results of a search query is provided. An optimized nDCG ranking model that optimizes an approximation of an average nDCG ranking evaluation metric may be generated from training data through an iterative boosting method for learning to more accurately rank a list of search results for a query. A combination of weak ranking classifiers may be iteratively learned that optimize an approximation of an average nDCG ranking evaluation metric for the training data by training a weak ranking classifier at each iteration for each document in the training data with a computed weight and assigned class label, and then updating the optimized nDCG ranking model by adding the weak ranking classifier with a combination weight to the optimized nDCG ranking model. | 09-30-2010 |
Rong Jin, East Lansing, MI US
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20130212090 | SIMILAR DOCUMENT DETECTION AND ELECTRONIC DISCOVERY - Systems and methods are disclosed for performing duplicate document analyses to identify texturally identical or similar documents, which may be electronic documents stored within an electronic discovery platform. A process is described which includes representing each of the documents, including a target document, as a relatively large n-tuple vector and also as a relatively small m-tuple vector, performing a series of one-dimensional searches on the set of m-tuple vectors to identify a set of documents which are near-duplicates to the target document, and then filtering the near set of near duplicate documents based upon the distance of their n-tuple vectors from that of the target document. | 08-15-2013 |
Xianxi Jin, Sterling Heights, MI US
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20140077758 | APPARATUS FOR INDUCTIVE CHARGING OF PORTABLE DEVICES IN VEHICLES - A portable device recharging system includes a base unit generating an electromagnetic field. A portable device includes a rechargeable battery inductively charged by the electromagnetic field. Spacers are disposed between the portable device and the base unit. The spacers support the portable device and maintain an air gap between the base unit and the portable device. | 03-20-2014 |
Xiaoling Jin, Farmington Hills, MI US
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20100276894 | ELECTRICALLY-CONDUCTIVE SEAL ASSEMBLY - A seal for a vehicle having a transmission output shaft and a transmission output shaft housing is provided. The seal comprises a contact member at least partially surrounding and contacting the transmission output shaft, a support member coupled to the contact member, the support member at least partially surrounding the transmission output shaft and extending along the transmission output shaft, the support member coupled to the transmission output shaft housing, and an electrically-conductive surface overlying at least a portion of the contact member and at least a portion of the support member, the electrically-conductive surface contacting the transmission output shaft and the transmission output shaft housing. | 11-04-2010 |
20130075371 | NON-DESTRUCTIVE EVALUATION OF WELDED JOINTS OF BAR WOUND STATOR UTILIZING INFRARED AND THERMAL METHODS - A method and system for non-destructive evaluation of one or more welds of a stator includes activating the stator welds using an electrical current; recording radiometric thermal images of the welds over time; and analyzing a temperature-time profile of a weld to qualify the weld by one or more of estimating the size of the weld, determining if the temperature of the activated weld has exceeded a predetermined temperature at a predetermined time, or comparing the temperature-time profile of the weld to a reference. The stator may be configured as a bar wound stator. A mask may be applied to the stator to reduce reflections or emissions from non-weld thermal sources. | 03-28-2013 |
20140209018 | METHOD, SYSTEM, AND STRUCTURE OF STATOR WITH COMMON INSULATING AND VARNISHING RESIN - A stator having a common varnish and weld insulation includes a stator lamination core and a motor winding wound around the stator lamination core. The motor winding includes a plurality of magnet wires configured such that they are substantially parallel to each other. Each magnet wire has two distal ends configured such that each distal end is welded to one distal end of an adjacent magnet wire, thereby forming a plurality of welded tips. The stator further includes a resin coating the welded tips and the stator. The resin serves as both a primary insulation for the welded tips, and as a varnish for the stator. This dual function of the resin may eliminate the need for separate insulation for the welded tips and varnish for the stator, and allow the resin to be applied to the welded tips and to the stator at substantially the same time. | 07-31-2014 |
Xiaorong Jin, Rochester Hills, MI US
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20090020216 | Method Of Making Tailored Core Laminated Sheet Metal - A method for laminating metal sheets together with a first polymer selected for its adhesive characteristics and a second polymer selected for its viscoelastic characteristics. One of the first sheets of metal or second sheets of metal is fed across a first engraved roller having recesses that carry the first polymer and deposit the first polymer onto only selected regions of the sheet of metal. One of the first and second sheets of metal is across a second engraved roller having recesses that carry the second polymer and deposit the second polymer onto only selected regions of the sheet of metal. And then the first and second sheets of metal are married together so that the first polymer and the second polymer are engaged between the first and second sheets in different regions, and the polymers are cured to thereby attach the sheets together as a laminated metal sheet. | 01-22-2009 |
20090022962 | Tailored core laminated sheet metal - A laminated sheet metal is comprised of a first sheet of metal and a second sheet of metal that are adhered together by a polymer layer core that is interposed between the two sheets and provides visco-elastic adhesion. The polymer layer has at least one region of a first polymer material that is selected for optimal viscous and elastic qualities by which to dampen the transmission of noise and vibration between the sheets, and at least one other region of a second polymer material that is selected for optimal adhesive qualities by which the sheets are optimally joined together against delamination. Thus the laminated sheet metal can be tailored to optimize the qualities that are desired for the manufacture of a particular product. | 01-22-2009 |
20090142538 | CORROSION RESISTANT PRECOATED LAMINATED STEEL - Two steel sheets joined face-to-face with a core layer form a laminated workpiece that may be shaped, for example, into automotive components. Depending on the nature of the core layer the laminated workpieces may be used for sound and vibration damping or as light weight structural panels. Before joining of the steel sheets, their facing surfaces may each be provided with a polymeric (organic or inorganic) corrosion resistant film that resists physical degradation such as tearing or scratching as the laminate is formed into a desired component shape. The pre-applied protective layer may also provide a bonding layer for the viscoelastic core or a structural core material. Conductive particles may be incorporated into the viscoelastic layer to assist in electrical resistance welding involving the laminated steel workpiece. | 06-04-2009 |
Yafei Jin, Ann Arbor, MI US
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20090143373 | QUINOLONE CARBOXYLIC ACID-SUBSTITUTED RIFAMYCIN DERIVATIVES - The compounds include substituted rifamycin derivatives in which a quinolone carboxylic acid pharmacophore is covalently bonded to a benzoxazinorifamycin or a spiropiperidinorifamycin. The rifamycin derivatives are useful as antimicrobial agents and are effective against a number of human and veterinary Gram positive and Gram negative pathogens. The advantage of the inventive compounds is that both the rifamycin and quinolone antibacterial pharmacophores are co-delivered with matched pharmacokinetics to the targeted pathogens of interests. Delivery of multiple antibacterial pharmacophores simultaneously to the targeted pathogens has the maximum chance of achieving synergy and minimizing the development of resistance to the antibiotics given. | 06-04-2009 |
20120077806 | Deubiquitinase Inhibitors and Methods for Use of the Same - Disclosed herein are methods of inhibiting a deubiquitinase (DUB), methods of treating pathogenic infections (e.g., viral, bacterial, and/or parasitic), methods of inhibiting cell proliferation, methods of treating a neurodegenerative disease, methods of treating one or more symptoms of a neurodegenerative disease or a genetic disorder, and compounds. | 03-29-2012 |
20140357673 | Deubiquitinase Inhibitors and Methods for Use of the Same - Disclosed herein are methods of inhibiting a deubiquitinase (DUB), methods of treating pathogenic infections (e.g., viral, bacterial, and/or parasitic), methods of inhibiting cell proliferation, methods of treating a neurodegenerative disease, methods of treating one or more symptoms of a neurodegenerative disease or a genetic disorder, and compounds. | 12-04-2014 |
Yimeng Jin, Rochester Hills, MI US
Patent application number | Description | Published |
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20120140529 | Energy Recirculation and Active Clamping to Improve Efficiency of Flyback or Push Pull DC to DC Converters - The present invention is a new circuit topology to improve the efficiency of a flyback or push-pull converter or any other DC/DC converter that incorporates a transformer and whose switching device's active node (drain for MOSFETs and collector for IGBTs) has no direct energy releasing path to the power supply. The present invention uses an auxiliary DC/DC converter separate from the main DC/DC converter to reroute the parasitic energy stored in the transformer's or inductor's leakage inductance, allowing for the output of the main DC/DC converter to be augmented with the energy that would otherwise be lost. The energy stored in the leakage inductance is converted and redirected to either the load side or the power supply side of the main DC/DC converter in a series or a parallel configuration. The present invention significantly increases the overall efficiency of the system by eliminating the power loss. | 06-07-2012 |
20120170325 | High Efficiency Solar Wind Inverter With Hybrid DCDC Converter - The present invention is a new design topology for solar/wind inverters using a new hybrid DC/DC converter design. This hybrid converter topology eliminates a difficult design compromise between lowering the minimum input voltage to harvest more solar/wind energy and achieving high power conversion efficiency when the input voltage is high in a conventional solar/wind inverter design. This invention uses both a forward converter and a flyback converter to deliver superior performance over a design that only uses one of the two converter topologies. | 07-05-2012 |
20120261228 | METHOD FOR DETERMINING WET CLUTCH TEMPERATURE - A method for determining clutch temperature. The method provides an accurate real-time clutch temperature that can be used to improve shift quality and protect against failure due to clutch overheating. A counter is incremented every time the clutch exceeds a threshold temperature to track cumulative high temperature conditions. Determining the clutch temperatures includes taking account of heat generation, clutch cooling by transmission oil flow from a groove when the clutch is engaged, clutch cooling by open transmission oil flow when the clutch is disengaged, oil vaporization, and heat conduction. | 10-18-2012 |
Yu Jin, Ann Arbor, MI US
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20120097224 | NON-VACUUM METHOD FOR FABRICATION OF A PHOTOVOLTAIC ABSORBER LAYER - The present invention provides a non-vacuum method of depositing a photovoltaic absorber layer based on electrophoretic deposition of a mixture of nanoparticles with a controlled atomic ratio between the elements. The nanoparticles are first dispersed in a liquid medium to form a colloidal suspension and then electrophoretically deposited onto a substrate to form a thin film photovoltaic absorber layer. The absorber layer may be subjected to optional post-deposition treatments for photovoltaic absorption. | 04-26-2012 |
Yulai Jin, Battle Creek, MI US
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20100055281 | Emulsions and Microcapsules With Substances Having Low Interfacial Tension, Methods of Making and Using Thereof - Disclosed are emulsions and microcapsules that comprise one or more substances with a low interfacial tension. Methods of making the emulsions and microcapsules as well as methods of using them are also disclosed. | 03-04-2010 |
20110111020 | Microcapsules Having Multiple Shells and Method for the Preparation Thereof - Single-core and multi-core microcapsules are provided, having multiple shells, at least one of which is formed of a complex coacervate of two components of shell materials. The complex coacervate may be the same or different for each shell. Also provided are methods for making the microcapsules. | 05-12-2011 |
20110117180 | VEGETARIAN MICROCAPSULES - Disclosed are microcapsules with shells that are not animal by-products and methods for preparing and using such microcapsules. | 05-19-2011 |