Chang, Danville
John Chang, Danville, CA US
Patent application number | Description | Published |
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20100089907 | Instantaneous In-Line Heating of Samples on a Monolithic Microwave Integrated Circuit Microfluidic Device - A micro-electro-mechanical system for heating a sample including a substrate, a micro-channel flow channel in the substrate, a carrier fluid within the micro-channel flow channel for moving the sample in the micro-channel flow channel, and a microwave source that directs microwaves onto the sample in the micro-channel flow channel for heating the sample. The carrier fluid and the substrate are made of materials that are not appreciably heated by the microwaves. The microwave source includes conductive traces or strips and a microwave power source connected to the conductive traces or strips. | 04-15-2010 |
20150077308 | BAND-NOTCHED SPIRAL ANTENNA - A band-notched spiral antenna having one or more spiral arms extending from a radially inner end to a radially outer end for transmitting or receiving electromagnetic radiation over a frequency range, and one or more resonance structures positioned adjacent one or more segments of the spiral arm associated with a notch frequency band or bands of the frequency range so as to resonate and suppress the transmission or reception of electromagnetic radiation over said notch frequency band or bands. | 03-19-2015 |
John T. Chang, Danville, CA US
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20140253397 | CONFORMAL, WEARABLE, THIN MICROWAVE ANTENNA FOR SUB-SKIN AND SKIN SURFACE MONITORING - A wearable antenna is operably positioned on a wearer's skin and is operably connected the wearer's tissue. A first antenna matched to the wearer's tissue is operably positioned on the wearer's skin. A second antenna matched to the air is operably positioned on the wearer's skin. Transmission lines connect the first antenna and the second antenna. | 09-11-2014 |
Robert Chang, Danville, CA US
Patent application number | Description | Published |
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20100153672 | CONTROLLED DATA ACCESS TO NON-VOLATILE MEMORY - A method of controlling data access to non-volatile memory is disclosed. The method includes storing a data file in a non-volatile memory. The non-volatile memory includes a memory array including a plurality of address ranges one or more of which corresponding to a protected portion of the memory array and one or more of which corresponding to an unprotected portion of the memory array. The method also includes communicating to a host device an indication that a memory request with respect to the protected portion of the memory array is denied. The indication is communicated for instructing the host device to avoid a timeout when the memory request is denied. | 06-17-2010 |
20100332534 | FILE SYSTEM AND METHOD OF FILE ACCESS - A file system and method of file access are disclosed. In a particular embodiment, a method is performed at a host device coupled to a non-volatile memory, where the host device includes a memory having a first file data structure. A first directory entry in a file directory of a file system is located where the first directory entry corresponds to a first file stored in the non-volatile memory. First data associated with the first directory entry, including first location data indicating a location of the first file in the non-volatile memory, is retrieved and stored in the first file data structure. A request to open the first file is received. In response, the first location data of the first file is retrieved from the first file data structure and data of the first file from the non-volatile memory is read. First metadata associated with the first file is extracted from the data read from the non-volatile memory. | 12-30-2010 |
20140108465 | File System and Method of File Access - A file system and method of file access are disclosed. In a particular embodiment, a method is performed at a host device coupled to a data storage device, where the host device includes a memory storing a file data structure. The host device receives a request to open a file and, in response to the request, retrieves location data of the file from the file data structure. The host device reads data of the file from the data storage device based on the location data and extracts metadata from the data of the file. | 04-17-2014 |
T. Debuene Chang, Danville, CA US
Patent application number | Description | Published |
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20090118684 | THERMAL PERSONAL CARE SYSTEMS AND METHODS - Devices and methods for the treatment of skin conditions and lesions are disclosed herein. A thermal device can be used to heat or cool a personal care pack that can then be used to cleanse, treat, and rejuvenate the skin. The personal care pack can be formulated with smooth or abrasive material and can contain a variety of liquids, lotions or gels. Application of the personal care pack, at the desired temperature to the skin can stimulate deeper blood circulation, clear pores, diminishes or removes deep and fine wrinkles, accelerate acne clearing, treat blemished skin, decrease edema and erythema of the skin, and reduce puritis of various etiologies. | 05-07-2009 |
20100217357 | Methods and Apparatus for Personal Care - Methods, apparatus and systems for personal care, such as treatment of a skin or hair treatment surface, are disclosed. In some embodiments, a base device is configured to thermally modify (heat or cool) an applicator on a hand piece that can then be used to cleanse, treat and/or otherwise rejuvenate the treatment surface. The applicator can be formulated with a smooth or abrasive material that can absorb, be coated with or otherwise take up a variety of materials, such as liquids, lotions, gels or creams, which are suitable for application to the treatment surface. The base device may thermally modify the material that is then coupled to the applicator and applied to the treatment surface during treatment. Application of the applicator at the desired temperature to the treatment surface may, for example, stimulate deeper blood circulation, clear pores, diminishes or removes deep and fine wrinkles, accelerate acne clearing, treat blemished skin, decrease edema and erythema of the skin, and/or reduce puritis of various etiologies. The hand piece may comprise one or more secondary treatment elements, such as LEDs for photoactivation, electrodes for delivery of micro-currents or vibrating elements for rubbing or abraiding, in order to achieve additional activation of the treatment surface and/or of the thermally modified material coupled to the applicator, which may enhance or improve treatment. | 08-26-2010 |