Patents by Inventor Haifeng Gao

Haifeng Gao 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).

  • Publication number: 20240181495
    Abstract: The present invention provides a multi-layer coating system comprising: (a) a first coating layer formed from a first coating composition; and (b) a second coating layer applied directly over at least a portion of the first coating layer and formed from a second coating composition. The present invention further provides a substrate coated with the multi-layer coating system.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 6, 2024
    Applicant: PPG Coatings (Tianjin) Co., Ltd.
    Inventors: Shengzhi Xu, Haifeng Liu, Siqi Gao, Zhengsong Luo
  • Publication number: 20240154537
    Abstract: A control circuit for an isolated power supply is disclosed, the control circuit includes a secondary-side drive signal generator, a secondary-side transistor switch turn-off detector and a primary-side control signal generator. The primary-side control signal generator is configured to: determine a second turn-on instant referring to an turn-off instant of the secondary-side synchronous rectification transistor from the turn-off acknowledgement signal; determine a first turn-on instant referring to a supposed turn-on instant for the primary-side transistor switch from the feedback signal of the output voltage of the isolated power supply; and determine the turn-on instant for the primary-side transistor switch from the second turn-on instant or the first turn-on instant whichever is later, and responsively generate the primary-side transistor switch control signal.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Inventors: Yanmei GUO, Zhen ZHU, Yihui CHEN, Yuehui LI, Xiaoru GAO, Haifeng MIAO, Hanfei YANG
  • Publication number: 20240144058
    Abstract: According to one embodiment, a method, computer system, and computer program product for probabilistic inference from imprecise knowledge is provided. The embodiment may include identifying a knowledge base of one or more statements and first probability distributions corresponding to each of the one or more statements. The embodiment may also include identifying one or more queries. The embodiment may further include determining logical inferences about and second probability distributions for queries from the one or more queries or statements from the one or more statements based on information in the knowledge base.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 2, 2024
    Inventors: Radu Marinescu, HAIFENG QIAN, Debarun Bhattacharjya, Alexander Gray, Francisco Barahona, Tian GAO, Ryan Nelson Riegel
  • Patent number: 11970357
    Abstract: The present application relates to the technical field of fiber winding control, and provides a tension control method of a multi-bundle winding equipment combined driving system, which solves the problem that the tension fluctuates greatly and cannot be output constantly in the fiber winding process.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: April 30, 2024
    Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jianguo Liang, Qingxue Huang, Yujie Duan, Xinyu Wen, Lianyun Jiang, Chunjiang Zhao, Xiaodong Zhao, Yinhui Li, Haifeng Gao, Jianglin Liu
  • Patent number: 11929684
    Abstract: Isolated power supply control circuits, isolated power supply and control method thereof are disclosed, the control circuit for controlling an isolated power supply includes a secondary-side control signal generator and a primary-side control signal generator. The secondary-side control signal generator produces a secondary-side transistor switch control signal containing information about a turn-off instant of a secondary-side synchronous rectification transistor, which serves as a second turn-on instant. The primary-side control signal generator derives, from a feedback signal, a supposed turn-on instant for a primary-side transistor switch, which serves as a first turn-on instant. The primary side turn-on signal generator further derives a turn-on instant for the primary-side transistor switch from the second or first turn-on instant whichever is later and responsively generates a primary-side transistor switch control signal.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: March 12, 2024
    Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.
    Inventors: Yanmei Guo, Zhen Zhu, Yihui Chen, Yuehui Li, Xiaoru Gao, Haifeng Miao, Hanfei Yang
  • Patent number: 11534956
    Abstract: The present disclosure provides a filament winding device, which includes a helical winding device, a circumferential winding device, and a fixing device, a workpiece is clamped through the fixing device that drives the workpiece to rotate radially and move axially, the workpiece is performed helical winding through the helical winding device, and the workpiece is performed circumferential winding through the circumferential winding device.
    Type: Grant
    Filed: June 5, 2022
    Date of Patent: December 27, 2022
    Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jianguo Liang, Xiaodong Zhao, Jianglin Liu, Hui Li, Junjie Guo, Haifeng Gao, Runtian Zhao
  • Publication number: 20220388226
    Abstract: The present disclosure provides a filament winding device, which includes a helical winding device, a circumferential winding device, and a fixing device, a workpiece is clamped through the fixing device that drives the workpiece to rotate radially and move axially, the workpiece is performed helical winding through the helical winding device, and the workpiece is performed circumferential winding through the circumferential winding device.
    Type: Application
    Filed: June 5, 2022
    Publication date: December 8, 2022
    Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jianguo Liang, Xiaodong Zhao, Jianglin Liu, Hui Li, Junjie Guo, Haifeng Gao, Runtian Zhao
  • Publication number: 20150368379
    Abstract: Hyperbranched polymers are synthesized with uniform structure based on one pot polymerization technique in confined space with nanometer scale, e.g. micelles in a microemulsion system. The segregated space in micelles or polymerizing nanoparticles is expected to regulate the growth of hyperbranched polymers by confining polymer-polymer reaction inside each individual locus. The obtained hyperbranched polymers have uniform size, similar to the size of nanoparticles, as indicated by a narrow molecular weight distribution of the polymers.
    Type: Application
    Filed: June 21, 2014
    Publication date: December 24, 2015
    Applicant: THE UNIVERSITY OF NOTRE DAME DU LAC
    Inventors: Haifeng Gao, Ke Min
  • Patent number: 8962764
    Abstract: A process for constructing multi-arm star macromolecules with uniform properties, high molecular weight and narrow molecular weight distribution using free radical polymerization is described.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: February 24, 2015
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Haifeng Gao, James Spanswick
  • Publication number: 20120077899
    Abstract: A process for constructing multi-arm star macromolecules with uniform properties, high molecular weight and narrow molecular weight distribution using free radical polymerization is described.
    Type: Application
    Filed: March 29, 2010
    Publication date: March 29, 2012
    Applicant: CARNEGIE MELLON UNIVERSITY
    Inventors: Krzysztof Matyjaszewski, Haifeng Gao, James Spanswick