Patents by Inventor Yakun ZHANG
Yakun ZHANG 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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Publication number: 20240124998Abstract: The titanium-containing oxide slag, low-purity silicon and slagging fluxes are subject to reduction smelting together, and a bulk Si—Ti intermediate alloy is obtained by slag-metal separation; the obtained bulk Si—Ti intermediate alloy is crushed into Si—Ti intermediate alloy particles; and the obtained Si—Ti intermediate alloy particles are used as an anode, metallic molybdenum or metallic nickel as a cathode, metallic titanium as a reference electrode, and NaCl—KCl—NaF together with small amounts of Na3TiF6 or K3TiF6 as a molten salt, to carry out the electrolysis under a high-purity argon atmosphere at a temperature of 973 K. Ti in the Si—Ti intermediate alloy particles dissolved at the anode and deposited at the cathode, while Si in the Si—Ti intermediate alloy particles fell off from the anode as metallic silicon powder.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Inventors: Yun LEI, Shiding WANG, Dongfang YANG, Wenhui MA, Zhanchao LI, Yakun ZHANG
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Publication number: 20240129923Abstract: A first communication device generates a first physical layer (PHY) data unit that includes information indicating a capability to use a channel bandwidth greater than a maximum channel bandwidth of the first communication device, and transmits the first PHY data unit to a second communication device during an association process with the second communication device. The first communication device generates a second PHY data unit that includes information indicating a capability to use at most the maximum channel bandwidth of the first communication device, and transmits the second PHY data unit to the second communication device when the first communication device is associated with the second communication device.Type: ApplicationFiled: December 18, 2023Publication date: April 18, 2024Inventors: Liwen CHU, Lei WANG, Hongyuan ZHANG, Yakun SUN, Jinjing JIANG, Hui-Ling LOU
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Patent number: 11962444Abstract: A first communication device generates a PHY preamble of a PHY data unit to include a first orthogonal frequency division multiplexing (OFDM) symbol corresponding to a legacy signal field. The legacy signal field includes i) a length subfield, and ii) a rate subfield. The length subfield and the rate subfield indicate a duration of the PHY data unit, and the legacy signal field is formatted according to a legacy second communication protocol. The first communication device generates the PHY preamble of a PHY data unit to include a second OFDM symbol corresponding to a duplicate of the legacy signal field, and a plurality of additional OFDM symbols corresponding to a non-legacy signal field. The first communication device sets the length subfield of the legacy signal field to a length value such that a remainder value resulting from dividing the length value by three, indicates that the PHY data unit conforms to the first communication protocol.Type: GrantFiled: September 30, 2021Date of Patent: April 16, 2024Assignee: Marvell Asia Pte LtdInventors: Hongyuan Zhang, Mingguang Xu, Yakun Sun
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Patent number: 11943024Abstract: The present application relates to devices and components including apparatus, systems, and methods to provide beamforming scheme selection and signaling in wireless communication systems.Type: GrantFiled: June 14, 2021Date of Patent: March 26, 2024Assignee: Apple Inc.Inventors: Yushu Zhang, Dawei Zhang, Haitong Sun, Rohit U. Nabar, Wei Zeng, Weidong Yang, Yakun Sun
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Patent number: 11913056Abstract: Provided is engineered microorganisms expressing acetoacetyl-CoA reductase variants and a method for improving the yield of PHA. Compared with the wild-type acetoacetyl-CoA reductase represented by SEQ ID NO. 31, the variant has one or more of the following mutations: (1) mutation of valine at position 141 to isoleucine or leucine; (2) mutation of methionine at position 12 to threonine, serine, alanine, leucine, lysine or isoleucine; (3) mutation of isoleucine at position 194 to valine, leucine or methionine; (4) mutation of glutamic acid at position 42 to lysine, glutamine, leucine, aspartic acid, proline, threonine, asparagine, or histidine; and (5) mutation of phenylalanine at position 55 to valine, alanine or isoleucine. The variants and their coding genes can promote the synthesis and accumulation of PHA by the strain and increase the yield of PHA.Type: GrantFiled: June 28, 2022Date of Patent: February 27, 2024Assignee: SHENZHEN BLUEPHA BIOSCIENCES CO., LTD.Inventors: Jin Yin, Yu Wang, Xiaocui Xie, Huayu Zhang, Yakun Wu, Tian Liu, Pingan Tang
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Publication number: 20230245946Abstract: Disclosed is a pressure balancing clamp for a press-pack insulated gate bipolar transistor (IGBT) module. The pressure balancing clamp for a press-pack IGBT module includes a bracket, where the bracket is provided with two longitudinally arranged pressure equalizing plates in a sliding way; the pressure equalizing plates are connected through pressure sensors; the upper and lower ends inside the bracket are respectively connected with the pressure equalizing plates through hydraulic devices and a displacement compensation device; opposite surfaces of the two pressure equalizing plates are respectively provided with heat dissipation and confluence devices. The pressure sensors are in one-to-one correspondence with the hydraulic devices and are electrically connected. The hydraulic devices adjust the pressure according to the readings of the pressure sensors in corresponding directions, so that the pressure of the press-pack IGBT module is balanced.Type: ApplicationFiled: December 30, 2022Publication date: August 3, 2023Applicant: Beijing University of TechnologyInventors: Tong AN, Rui ZHOU, Yakun ZHANG, Fei QIN
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Patent number: 11699633Abstract: Disclosed is a pressure balancing clamp for a press-pack insulated gate bipolar transistor (IGBT) module. The pressure balancing clamp for a press-pack IGBT module includes a bracket, where the bracket is provided with two longitudinally arranged pressure equalizing plates in a sliding way; the pressure equalizing plates are connected through pressure sensors; the upper and lower ends inside the bracket are respectively connected with the pressure equalizing plates through hydraulic devices and a displacement compensation device; opposite surfaces of the two pressure equalizing plates are respectively provided with heat dissipation and confluence devices. The pressure sensors are in one-to-one correspondence with the hydraulic devices and are electrically connected. The hydraulic devices adjust the pressure according to the readings of the pressure sensors in corresponding directions, so that the pressure of the press-pack IGBT module is balanced.Type: GrantFiled: December 30, 2022Date of Patent: July 11, 2023Assignee: Beijing University of TechnologyInventors: Tong An, Rui Zhou, Yakun Zhang, Fei Qin
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Patent number: 11028691Abstract: A drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for a cutter head of a boring machine and a control method thereof are provided. The drive system includes a variable-displacement hydraulic motor group, a fixed-displacement hydraulic motor group and a variable-displacement hydraulic pump group. The variable-displacement hydraulic motor group, the fixed-displacement hydraulic motor group, and the variable-displacement hydraulic pump group are all connected to a main oil circuit of a cutter head system of the boring machine. The variable-displacement hydraulic pump group inputs flow to the main oil circuit; and, the variable-displacement hydraulic motor group and the fixed-displacement hydraulic motor group acquire flow from the main oil circuit. Displacements of the fixed-displacement hydraulic motor group and the variable-displacement hydraulic motor group are set in a way of specific displacement combination.Type: GrantFiled: December 21, 2016Date of Patent: June 8, 2021Assignee: ZHEJIANG UNIVERSITYInventors: Guofang Gong, Xu Yang, Lintao Wang, Chao Wang, Yakun Zhang, Weiqiang Wu, Tong Liu, Liwen Duan
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Patent number: 10843904Abstract: Provided is an offshore crane heave compensation control system and method using video rangefinding to achieve heave compensation in a directly driven pump-controlled electro-hydraulic heave compensator. The heave compensation and the heave compensator are applicable for special operation and control requirements on a fixed offshore platform and allow the crane to achieve steady lifting of a load away from or lowering of a load on to a supply vessel without being influenced by the motion of the supply vessel caused by ocean currents, ocean winds, or ocean waves. Also provided is a test platform for the offshore crane heave compensation control system using video rangefinding. The test platform provides a realistic simulation for all lifting and lowering processes of an offshore platform crane in offshore environments to study the motion control of the provided system.Type: GrantFiled: December 22, 2016Date of Patent: November 24, 2020Assignee: Zhejiang UniversityInventors: Guofang Gong, Yakun Zhang, Weiqiang Wu, Xiangping Liao, Huayong Yang
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Publication number: 20200032650Abstract: A drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for a cutter head of a boring machine and a control method thereof are provided. The drive system includes a variable-displacement hydraulic motor group, a fixed-displacement hydraulic motor group and a variable-displacement hydraulic pump group. The variable-displacement hydraulic motor group, the fixed-displacement hydraulic motor group, and the variable-displacement hydraulic pump group are all connected to a main oil circuit of a cutter head system of the boring machine. The variable-displacement hydraulic pump group inputs flow to the main oil circuit; and, the variable-displacement hydraulic motor group and the fixed-displacement hydraulic motor group acquire flow from the main oil circuit. Displacements of the fixed-displacement hydraulic motor group and the variable-displacement hydraulic motor group are set in a way of specific displacement combination.Type: ApplicationFiled: December 21, 2016Publication date: January 30, 2020Inventors: Guofang Gong, Xu Yang, Lintao Wang, Chao Wang, Yakun Zhang, Weiqiang Wu, Tong Liu, Liwen Duan
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Publication number: 20180370775Abstract: Provided is an offshore crane heave compensation control system and method using video rangefinding to achieve heave compensation in a directly driven pump-controlled electro-hydraulic heave compensator. The heave compensation and the heave compensator are applicable for special operation and control requirements on a fixed offshore platform and allow the crane to achieve steady lifting of a load away from or lowering of a load on to a supply vessel without being influenced by the motion of the supply vessel caused by ocean currents, ocean winds, or ocean waves. Also provided is a test platform for the offshore crane heave compensation control system using video rangefinding. The test platform provides a realistic simulation for all lifting and lowering processes of an offshore platform crane in offshore environments to study the motion control of the provided system.Type: ApplicationFiled: December 22, 2016Publication date: December 27, 2018Applicant: Zhejiang UniversityInventors: Guofang GONG, Yakun ZHANG, Weiqiang WU, Xiangping LIAO, Huayong Yang