Patents by Inventor Fei Ma

Fei Ma 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).

  • Patent number: 11761853
    Abstract: An engine piston is provided. A first sealing structure, including a first sealing rubber ring and a first annular groove, is provided at a head of the engine piston. The first sealing rubber ring has a U-shaped section with a reserved space at the top of the first sealing rubber ring, and a gap for circulating hydraulic oil is provided between a ring bank, above the first sealing rubber ring, of the engine piston and a simulated cylinder liner of a fatigue testing apparatus for an engine piston. In a case that the hydraulic oil is introduced into the fatigue testing apparatus for the engine piston to simulate pressure loading under a high-explosion pressure, when the hydraulic oil enters into the reserved space from the gap for circulating the hydraulic oil, an inner wall of the reserved space is squeezed and the first sealing rubber ring is deformed.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: September 19, 2023
    Assignees: Weichai Power Co., LTD., Weichai Heavy Machinery Co., LTD
    Inventors: Haijun Liu, Ninglu Wang, Fei Ma, Baoyu Liu, Lei Li
  • Publication number: 20230273189
    Abstract: An immunoadsorbent and a composite affinity column for purifying fumonisin B1, anguidin, T-2 toxin, zearalenone, and vomitoxin. The immunoadsorbent includes a solid phase carrier, and a fumonisin B1 monoclonal antibody, an anguidin monoclonal antibody, a T-2 toxin monoclonal antibody, a zearalenone monoclonal antibody and a vomitoxin monoclonal antibody which are coupled to the solid phase carrier, the anguidin monoclonal antibody is a monoclonal antibody secreted by a hybridoma cell strain DAS5G11E7 having an accession number of CCTCCNO:C201881. The affinity column can be used for high performance liquid chromatography-mass spectrometry detection of the fumonisin B1, the anguidin, the T-2 toxin, the zearalenone and the vomitoxin, and has stable performance. Furthermore, an economical, quick, precise and safe detection method is established of the basis of the affinity column, and can be used for purifying and detecting samples of the five toxins without mutual interference and influence.
    Type: Application
    Filed: November 16, 2020
    Publication date: August 31, 2023
    Applicant: OIL CROPS RESEARCH INSTITUTE, CHINESE ACADEMY OF AGRICULTURAL SCIENCES
    Inventors: Qi ZHANG, Yizhen BAI, Nanri YIN, Fei MA, Peiwu LI
  • Publication number: 20230168153
    Abstract: An engine piston is provided. A first sealing structure, including a first sealing rubber ring and a first annular groove, is provided at a head of the engine piston. The first sealing rubber ring has a U-shaped section with a reserved space at the top of the first sealing rubber ring, and a gap for circulating hydraulic oil is provided between a ring bank, above the first sealing rubber ring, of the engine piston and a simulated cylinder liner of a fatigue testing apparatus for an engine piston. In a case that the hydraulic oil is introduced into the fatigue testing apparatus for the engine piston to simulate pressure loading under a high-explosion pressure, when the hydraulic oil enters into the reserved space from the gap for circulating the hydraulic oil, an inner wall of the reserved space is squeezed and the first sealing rubber ring is deformed.
    Type: Application
    Filed: July 6, 2022
    Publication date: June 1, 2023
    Inventors: Haijun LIU, Ninglu WANG, Fei MA, Baoyu LIU, Lei LI
  • Patent number: 11658292
    Abstract: A silicon-based anode material, a preparation method thereof and a lithium ion battery are provided. The preparation method of the silicon-based anode material includes: passing a silicon substrate material through a vapor deposition gas to coat the surface of the silicon substrate material with a carbon deposition layer, the vapor deposition gas includes a first carbon source gas and a second carbon source gas, the volume percentage of the first carbon source gas and the second carbon source gas in the vapor deposition gas increases or decreases at different reaction stages for forming the carbon deposition layer. The side of the carbon deposited layer close to the silicon base material is more or less dense than the other side of the carbon deposited layer. The coating layer on the surface of the silicon-based anode material has a continuously changing junction, thereby greatly improving the cycling stability of the material.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: May 23, 2023
    Assignee: SHANGHAI SHANSHAN TECH CO., LTD.
    Inventors: Liangqin Wei, Fei Ma, Dongdong Liu, Yuhu Wu, Zhihong Wu, Xiaoyang Ding, Fengfeng Li
  • Publication number: 20220371913
    Abstract: Ternary precursor particles used for a lithium-ion battery, the ternary precursor particles having a NixCoyMnz(OH)2, wherein, x+y+z=1, 0<x<1, 0<y<1, 0<z<1; each ternary precursor particle is a spheroidal structure, and comprises a shell, a transition layer and a particle core; the shell is a dense structure, the particle core is a porous structure, a density of the shell is greater than a density of the particle core, the transition layer surrounds the particle core and is sandwiched between the shell and the particle core; each ternary precursor particle is a mixture formed by mixing the nickel hydroxide, the cobalt hydroxide and the manganese hydroxide at the atomic level; a crystallinity of the shell is greater than a crystallinity of the transition layer, and the crystallinity of the transition layer is greater than a crystallinity of the particle core.
    Type: Application
    Filed: August 5, 2022
    Publication date: November 24, 2022
    Inventors: YUE-FEI MA, JUN ZHENG
  • Publication number: 20220328806
    Abstract: A silicon-based anode material, a preparation method thereof and a lithium ion battery are provided. The preparation method of the silicon-based anode material includes: passing a silicon substrate material through a vapor deposition gas to coat the surface of the silicon substrate material with a carbon deposition layer, the vapor deposition gas includes a first carbon source gas and a second carbon source gas, the volume percentage of the first carbon source gas and the second carbon source gas in the vapor deposition gas increases or decreases at different reaction stages for forming the carbon deposition layer. The side of the carbon deposited layer close to the silicon base material is more or less dense than the other side of the carbon deposited layer. The coating layer on the surface of the silicon-based anode material has a continuously changing junction, thereby greatly improving the cycling stability of the material.
    Type: Application
    Filed: December 30, 2019
    Publication date: October 13, 2022
    Applicant: SHANGHAI SHANSHAN TECH CO., LTD.
    Inventors: Liangqin Wei, Fei Ma, Dongdong Liu, Yuhu Wu, Zhihong Wu, Xiaoyang Ding, Fengfeng Li
  • Publication number: 20220328813
    Abstract: A silicon-based anode material for secondary batteries, a preparation method thereof and a secondary battery are provided. The silicon-based anode material includes: an inner core including an Si particle and silicon oxide SiOx1, where 0<x1 <2, a first shell layer including a compound of the general formula MySiOz (0<y?4, 0<z?5, and z?x1) and a C particle, wherein the first shell layer covers the inner core, and the contents of M and C in the first shell layer gradually increase from a side thereof close to the inner core to another side thereof far away from the inner core; and a second shell layer including a carbon film layer or a composite film layer formed by a carbon film layer and a conductive additive, the second shell layer covers the first shell layer. The first charge-discharge cycle capability of the silicon-based anode material is improved, and the manufacturing cost is reduced.
    Type: Application
    Filed: December 30, 2019
    Publication date: October 13, 2022
    Applicant: SHANGHAI SHANSHAN TECH CO., LTD.
    Inventors: Yuhu Wu, Fei Ma, Dongdong Liu, Liangqin Wei, Zhihong Wu, Xiaoyang Ding, Fengfeng Li
  • Patent number: 11440811
    Abstract: Ternary precursor particles used for a lithium-ion battery, the ternary precursor particles having a NixCoyMnz(OH)2, wherein, x+y+z=1, 0<x<1, 0<y<1, 0<z<1; each ternary precursor particle is a spheroidal structure, and comprises a shell, a transition layer and a particle core; the shell is a dense structure, the particle core is a porous structure, the transition layer surrounds the particle core and is sandwiched between the shell and the particle core; each ternary precursor particle is a mixture formed by mixing the nickel hydroxide, the cobalt hydroxide and the manganese hydroxide at the atomic level; a crystallinity of the shell is greater than a crystallinity of the transition layer, and the crystallinity of the transition layer is greater than a crystallinity of the particle core.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 13, 2022
    Assignee: XTC New Energy Materials(Xiamen) LTD.
    Inventors: Yue-Fei Ma, Jun Zheng
  • Publication number: 20220208601
    Abstract: A semiconductor device has a semiconductor material in a substrate. The semiconductor device has an MOS transistor. A trench in the substrate extends from a top surface of the substrate) into the semiconductor material. A shield is disposed in the trench. The shield has a contact portion which extends toward a top surface of the trench. A gate of the MOS transistor is disposed in the trench over the shield. The gate is electrically isolated from the shield. The gate is electrically isolated from the contact portion of the shield by a shield isolation layer which covers an angled surface of the contact portion extending toward the top of the trench. Methods of forming the semiconductor device are disclosed.
    Type: Application
    Filed: March 15, 2022
    Publication date: June 30, 2022
    Inventors: Hong YANG, Seetharaman SRIDHAR, Ya ping CHEN, Fei MA, Yunlong LIU, Sunglyong KIM
  • Patent number: 11364941
    Abstract: A bidirectional windage resistance brake apparatus including a base, a first cylinder, a second cylinder, a first windage resistance plate and a second windage resistance plate, a tail of the first windage resistance plate is hinged with the base; the first windage resistance plate includes a first supporting rod, one end of which is hinged to a middle portion of the first windage resistance plate, and another end is connected with the first cylinder; a tail of the second windage resistance plate is hinged with the base; the second windage resistance plate includes a second supporting rod, one end of which is hinged to a middle portion of the second windage resistance plate, and another end is connected with the second cylinder. The brake apparatus is high in brake efficiency and reliability.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: June 21, 2022
    Assignee: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
    Inventors: Yunpeng Wang, Fei Ma, Chonghong Yin, Jinsong Tang
  • Publication number: 20220135091
    Abstract: A bidirectional windage resistance brake apparatus including a base, a first cylinder, a second cylinder, a first windage resistance plate and a second windage resistance plate, a tail of the first windage resistance plate is hinged with the base; the first windage resistance plate includes a first supporting rod, one end of which is hinged to a middle portion of the first windage resistance plate, and another end is connected with the first cylinder; a tail of the second windage resistance plate is hinged with the base; the second windage resistance plate includes a second supporting rod, one end of which is hinged to a middle portion of the second windage resistance plate, and another end is connected with the second cylinder. The brake apparatus is high in brake efficiency and reliability.
    Type: Application
    Filed: January 18, 2022
    Publication date: May 5, 2022
    Inventors: YUNPENG WANG, FEI MA, CHONGHONG YIN, JINSONG TANG
  • Patent number: 11322594
    Abstract: A semiconductor device, and methods of forming the same. In one example, the semiconductor device includes a trench in a substrate having a top surface, and a shield within the trench. The semiconductor device also includes a shield liner between a sidewall of the trench and the shield, and a lateral insulator over the shield contacting the shield liner. The semiconductor device also includes a gate dielectric layer on an exposed sidewall of the trench between the lateral insulator and the top surface. The lateral insulator may have a minimum thickness at least two times thicker than a maximum thickness of the gate dielectric layer.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: May 3, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Fei Ma, Ya ping Chen, Yunlong Liu, Hong Yang, Shengpin Yang, Baoqiang Niu, Rui Liu, Zhi Peng Feng, Seetharaman Sridhar, Sunglyong Kim
  • Patent number: 11302568
    Abstract: A semiconductor device has a semiconductor material in a substrate. The semiconductor device has an MOS transistor. A trench in the substrate extends from a top surface of the substrate) into the semiconductor material. A shield is disposed in the trench. The shield has a contact portion which extends toward a top surface of the trench. A gate of the MOS transistor is disposed in the trench over the shield. The gate is electrically isolated from the shield. The gate is electrically isolated from the contact portion of the shield by a shield isolation layer which covers an angled surface of the contact portion extending toward the top of the trench. Methods of forming the semiconductor device are disclosed.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: April 12, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Hong Yang, Seetharaman Sridhar, Ya ping Chen, Fei Ma, Yunlong Liu, Sunglyong Kim
  • Publication number: 20220052165
    Abstract: A semiconductor device, and methods of forming the same. In one example, the semiconductor device includes a trench in a substrate having a top surface, and a shield within the trench. The semiconductor device also includes a shield liner between a sidewall of the trench and the shield, and a lateral insulator over the shield contacting the shield liner. The semiconductor device also includes a gate dielectric layer on an exposed sidewall of the trench between the lateral insulator and the top surface. The lateral insulator may have a minimum thickness at least two times thicker than a maximum thickness of the gate dielectric layer.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 17, 2022
    Inventors: Fei Ma, Ya ping Chen, Yunlong Liu, Hong Yang, Shengpin Yang, Baoqiang Niu, Rui Liu, Zhi Peng Feng, Seetharaman Sridhar, Sunglyong Kim
  • Patent number: 11228664
    Abstract: The present disclosure provides a method and an apparatus for acquiring remote-procedure-call (RPC) member information, an electronic device and a storage medium, and relates to the field of micro-services technologies in cloud services. The method includes: pushing, by nodes of a RPC cluster, respective local member lists of the nodes of the RPC cluster to each other, and merging, by each node of the RPC cluster, a received member list with a current local member list while performing deduplication until member lists of the nodes of the RPC cluster are synchronized.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: January 18, 2022
    Assignee: Beijing Baidu Netcom Science Technology Co., Ltd.
    Inventors: Yu Hao, Fei Ma
  • Publication number: 20210333141
    Abstract: A method for arranging sensors and a sensor arrangement structure, pair sensors by adding an additional sensor, and sets an operating mode between the sensors in an “OR” mode by a software. When one of the sensors become abnormal, an apparatus operates normally, which lowers a probability of crash of the apparatus, reduces loss of production capacity and raises production rate.
    Type: Application
    Filed: August 2, 2019
    Publication date: October 28, 2021
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jing ZHANG, Chenjie LI, Junjun WANG, Fei MA
  • Patent number: 11127852
    Abstract: A trench gate metal oxide semiconductor field effect transistor (MOSFET) device includes an epitaxial layer on a substrate both doped a first conductivity type. Active area trenches have polysilicon gates over a double shield field plate. A junction termination trench includes a single shield field plate in a junction termination area which encloses the active area that includes a retrograde dopant profile of the second conductivity type into the epitaxial layer in the junction termination area. Pbody regions of a second conductivity type are between active trenches and between the outermost active trench and the junction termination trench. Source regions of the first conductivity type are in the body regions between adjacent active trenches. Metal contacts are over contact apertures that extend through a pre-metal dielectric layer reaching the body region under the source region, the single shield field plate, and that couples together the polysilicon gates.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 21, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sunglyong Kim, Seetharaman Sridhar, Hong Yang, Ya Ping Chen, Yunlong Liu, Fei Ma
  • Patent number: 11109901
    Abstract: A quick release sternum closing fixator has a locking roller, and a male fixing piece and a female fixing piece that can be plugged together. The male fixing piece has an elastic plug and the first claw hook plate. The elastic plug has the first serration on both sides and a tightening groove in the middle, thus forming two elastic claws. A tensioning device forces the two elastic claws to move against each other is provided between the said locking roller and the two elastic claws. After the locking roller rotates, when the elastic claws on the male fixing piece lose resilience due to the growth of human tissues, the two elastic claws can be forcibly pulled back to the initial state by rotating the locking roller, thus smoothly and quickly opening the sternum closing fixator.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: September 7, 2021
    Assignee: CHANGZHOU WASTON MEDICAL APPLIANCE CO., LTD
    Inventors: Renmin Hu, Jiaping Yang, Fei Ma, Dong Wei
  • Patent number: 11107318
    Abstract: A gaming system, computer-implemented method and gaming device are operable to determine player identification data corresponding to a player in a property corresponding to a selected one of multiple gaming operator nodes, compare the player identification data with each of multiple data blocks in a block chain to determine a match between the player identification data and one of the data blocks, and responsive determining that the player identification data matches one of the data blocks, send an alarm signal to a gaming operator that corresponds to the selected one of the gaming operator nodes.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 31, 2021
    Assignee: IGT
    Inventors: Fei Ma, Haipeng Wang, Naibin Song, Yang Liu, Sarina Bao, Xuan Wei
  • Patent number: 11108276
    Abstract: The invention relates to a high-performance shielding sheet, preparation method thereof and coil module comprising the same. The high-performance shielding sheet includes at least one sheet which include: at least one shielding layer with low coercive force and low remanence formed of a soft magnetic material; and at least one adhesive layer disposed on at least one side of the shielding layer; and wherein the shielding layer includes a plurality of graphical slits, and the plurality of graphical slits divide the shielding layer into a plurality of graphical fragments; and wherein the plurality of graphical slits are filled with the adhesive layer, enabling the plurality of graphical fragments to be separated from each other and have a good insulation property. The advantages include: improving the electric charging conversion rate, increasing the charging efficiency, reducing the transmission loss, and increasing the uniformity of the electromagnetic wave transmission medium.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 31, 2021
    Assignee: SUNLINE PRINTING (SHANGHAI) ELECTRONICS CO., LTD.
    Inventors: Kexin Xu, Tao Lin, Changhe Wu, Jin Wang, Qingwen Guo, Huixin Hu, Fei Ma, Xu Yang, Yunfang Huo, Jianghua Qian