Patents by Inventor Yuming Hu
Yuming Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11948983Abstract: A SiC ohmic contact preparation method is provided and includes: selecting a SiC substrate; preparing a graphene/SiC structure by forming a graphene on a Si-face of the SiC substrate; depositing an Au film on the graphene of the graphene/SiC structure; forming a first transfer electrode pattern on the Au film by a first photolithography; etching the Au film uncovered by the first transfer electrode pattern through a wet etching; etching the graphene uncovered by the Au film through a plasma etching after the wet etching; forming a second transfer electrode pattern on the SiC substrate by a second photolithography; depositing an Au material on the Au film exposed by the second transfer electrode pattern and forming an Au electrode and then annealing. The graphene reduces potential barrier associated with the SiC interface, specific contact resistance of ohmic contact reaches the order of 10?7˜10?8 ?·cm2, and the method has high repeatability.Type: GrantFiled: October 11, 2021Date of Patent: April 2, 2024Assignee: XIDIAN UNIVERSITYInventors: Yanfei Hu, Hui Guo, Yuming Zhang, Jiabo Liang, Yanjing He, Hao Yuan, Yuting Ji
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Patent number: 11922892Abstract: The disclosed devices may include a driver circuit including a voltage boost circuit, a pulse modulation controller, and optionally a headroom processor. The voltage boost circuit may be configured to receive a device input voltage (such as a battery voltage) and generate a backlight drive voltage. The pulse modulation controller may be configured to provide a pulse modulation signal to the voltage boost circuit, and may include a digital circuit or an analog circuit. Example devices may include a backlight unit receiving the backlight voltage. The optional headroom processor may provide a headroom signal to the pulse modulation controller based on a headroom voltage determined from the backlight unit. Devices may further include a backlight unit including an arrangement of light-emissive elements, and may include display devices such as head-mounted devices. Various other methods, systems, and computer-readable media are also disclosed.Type: GrantFiled: July 13, 2021Date of Patent: March 5, 2024Assignee: Meta Platforms Technologies, LLCInventors: Yuming Liu, Chao Hu, Joaquin Andres Fierro, Nathan Slattengren, David Viviescas, Stella Chung, Tajbid Rahman
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Patent number: 11375408Abstract: Aspects of this disclosure relate to local breakout. A network node can receive remote downlink traffic from a remote network, receive local downlink traffic from a local resource, aggregate at least the remote downlink traffic with the local downlink traffic based on one or more filters stored in memory of the network node, and route the aggregated downlink traffic to a wireless communication device. The remote downlink traffic can be associated with a first application of the wireless communication device, and the local downlink traffic can be associated with a second application of the wireless communication device. The network node can be a local gateway in certain embodiments. The network node can steer uplink traffic steering by filtering uplink traffic associated with the wireless communication device into local uplink traffic and remote uplink traffic based on at least one filter for filtering traffic stored in the memory.Type: GrantFiled: March 5, 2020Date of Patent: June 28, 2022Assignee: XCOM Labs, Inc.Inventors: Yuming Hu, Michael Mingxi Fan
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Publication number: 20200288352Abstract: Aspects of this disclosure relate to local breakout. A network node can receive remote downlink traffic from a remote network, receive local downlink traffic from a local resource, aggregate at least the remote downlink traffic with the local downlink traffic based on one or more filters stored in memory of the network node, and route the aggregated downlink traffic to a wireless communication device. The remote downlink traffic can be associated with a first application of the wireless communication device, and the local downlink traffic can be associated with a second application of the wireless communication device. The network node can be a local gateway in certain embodiments. The network node can steer uplink traffic steering by filtering uplink traffic associated with the wireless communication device into local uplink traffic and remote uplink traffic based on at least one filter for filtering traffic stored in the memory.Type: ApplicationFiled: March 5, 2020Publication date: September 10, 2020Inventors: Yuming Hu, Michael Mingxi Fan
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Publication number: 20150094063Abstract: Access terminals are adapted to facilitate hand down procedures between a preferred radio access network and a secondary radio access network. According to various examples, an access terminal may attempt to sequentially access one or more other carriers and/or one or more other sectors associated with the preferred radio access network before handing down to a secondary radio access network. According to additional examples, an access terminal that is instructed to hand down from a preferred radio access network to a secondary radio access network may attempt to sequentially access one or more carriers and/or one or more sectors associated with the secondary radio access network. Other aspects, embodiments, and features are also included.Type: ApplicationFiled: September 27, 2013Publication date: April 2, 2015Applicant: QUALCOMM IncorporatedInventors: Yuming Hu, Chintan Pravin Turakhia
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Patent number: 8901913Abstract: Among others things, techniques, systems, and apparatus are disclosed for recording electrophysiological signals. In one aspect, a microelectrode sensing device includes a printed circuit board (PCB), a chip unit electrically connected to the PCB, and a cell culture chamber positioned over the chip unit and sealed to the PCB with the chip unit between the PCB and the cell culture chamber. The chip unit includes a substrate; a conductive layer positioned over the substrate that includes one or more recording electrodes; an insulation layer positioned over the conductive layer; another conductive layer positioned over the insulation layer that includes positioning electrodes; and another insulation layer positioned over the other conductive layer. The recording and positioning electrodes are electrically independent so as to independently receive a stimulus signal at each recording electrode and positioning electrode and independently detect a sensed signal at each recording electrode.Type: GrantFiled: April 16, 2009Date of Patent: December 2, 2014Assignee: CapitalBio CorporationInventors: Jing Zhu, Zhongyao Yu, Xueling Quan, Guangxin Xiang, Yuming Hu, Wanli Xing, Jing Cheng
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Patent number: 8540416Abstract: The present invention provides a device for handling fluids, and more particularly a merging apparatus for fluidic and microfluidic devices utilizing passive valving in conjunction with a single sensor to uniformly blend contributory working fluid streams. Symmetric and non symmetric embodiments with and without branch channels are described. The present invention also provides methods for merging liquids using the device of the invention.Type: GrantFiled: February 6, 2007Date of Patent: September 24, 2013Assignees: Capitalbio Corporation, Tsinghua UniversityInventors: Xiaosheng Guan, Min Guo, Cheng Zhou, Yuming Hu, Jing Cheng
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Patent number: 8273309Abstract: The present invention relates to a wicking inhibitor for fluidic and microfluidic devices that reduces wicking by providing a structure that interrupts the flow of a working fluid through a fluidic channel interface having corner angles greater than ninety degrees.Type: GrantFiled: December 15, 2006Date of Patent: September 25, 2012Assignees: Capitalbio Corporation, Tsinghua UniversityInventors: Xiaosheng Guan, Min Guo, Cheng Zhou, Yuming Hu, Jing Cheng
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Patent number: 8003063Abstract: The invention is directed to microfluidic devices comprising at least two processing channels, wherein each of the processing channels comprises an inlet, an outlet, and a high-flow-resistant and hydrophilic conduit; a distributing channel, wherein the distributing channel comprises an upstream end and a downstream end, and is in fluid communication with each inlet of the processing channels via the high-flow-resistant and hydrophilic conduit; and a flushing channel, wherein the flushing channel comprises an upstream end and a downstream end, and is in fluid communication with each outlet of the processing channels. The invention also provides methods of using the microfluidic devices.Type: GrantFiled: March 9, 2007Date of Patent: August 23, 2011Assignees: CapitalBio Corporation, Tsinghua UniversityInventors: Xiaosheng Guan, Min Guo, Rong Zhang, Dong Dong, Yuming Hu, Ting Cui, Jing Cheng
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Publication number: 20100068098Abstract: The invention is directed to microfluidic devices comprising at least two processing channels, wherein each of the processing channels comprises an inlet, an outlet, and a high-flow-resistant and hydrophilic conduit; a distributing channel, wherein the distributing channel comprises an upstream end and a downstream end, and is in fluid communication with each inlet of the processing channels via the high-flow-resistant and hydrophilic conduit; and a flushing channel, wherein the flushing channel comprises an upstream end and a downstream end, and is in fluid communication with each outlet of the processing channels. The invention also provides methods of using the microfluidic devices.Type: ApplicationFiled: March 9, 2007Publication date: March 18, 2010Inventors: Xiaosheng Guan, Min Guo, Rong Zhang, Dong Dong, Yuming Hu, Ting Cui, Jing Cheng
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Publication number: 20100024888Abstract: The present invention provides a device for handling fluids, and more particularly a merging apparatus for fluidic and microfluidic devices utilizing passive valving in conjunction with a single sensor to uniformly blend contributory working fluid streams. Symmetric and non symmetric embodiments with and without branch channels are described. The present invention also provides methods for merging liquids using the device of the invention.Type: ApplicationFiled: February 6, 2007Publication date: February 4, 2010Inventors: Xiaosheng Guan, Min Guo, Cheng Zhou, Yuming Hu, Jing Cheng
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Publication number: 20090322309Abstract: Among others things, techniques, systems, and apparatus are disclosed for recording electrophysiological signals. In one aspect, a microelectrode sensing device includes a printed circuit board (PCB), a chip unit electrically connected to the PCB, and a cell culture chamber positioned over the chip unit and sealed to the PCB with the chip unit between the PCB and the cell culture chamber. The chip unit includes a substrate; a conductive layer positioned over the substrate that includes one or more recording electrodes; an insulation layer positioned over the conductive layer; another conductive layer positioned over the insulation layer that includes positioning electrodes; and another insulation layer positioned over the other conductive layer. The recording and positioning electrodes are electrically independent so as to independently receive a stimulus signal at each recording electrode and positioning electrode and independently detect a sensed signal at each recording electrode.Type: ApplicationFiled: April 16, 2009Publication date: December 31, 2009Inventors: Jing Zhu, Zhongyao Yu, Xueling Quan, Guangxin Xiang, Yuming Hu, Wanli Xing, Jing Cheng
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Publication number: 20090148349Abstract: An wicking inhibitor for fluidic and microfluidic devices reduces wicking by providing a structure that interrupts the flow of a working fluid through a fluidic channel interface having corner angles greater than ninety degrees.Type: ApplicationFiled: December 15, 2006Publication date: June 11, 2009Inventors: Xiaosheng Guan, Min Guo, Cheng Zhou, Yuming Hu, Jing Cheng
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Publication number: 20090123338Abstract: An bubble-resistant injector port for fluidic and microfluidic devices includes an air-exhaustion feature to reduce the inclusion of bubbles or voids in injected samples, particularly in samples injected by a micropipette. The air-exhaustion feature comprises an air-exhaustion cavity in gas communication with the injector port through a narrowed channel that permits a flow of air into the cavity, while impeding a flow of injected liquid into the cavity.Type: ApplicationFiled: December 18, 2006Publication date: May 14, 2009Inventors: Xiaosheng Guan, Yuming Hu, Min Guo, Cheng Zhou, Jing Cheng