Patents by Inventor Kunfeng Li

Kunfeng Li 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).

  • Hot repair material of refractory materials
    Patent number: 11384026
    Abstract: A hot repair material of refractory materials is provided and includes main materials and binding agents. The main materials include silicon carbide powders with six different particle sizes and a mass ratio according to particle sizes from large to small is 8:5:8:15:8:10. The binding agents include silicon nitride powders, a sodium silicate powder, an aluminum phosphate powder, a furfuryl alcohol, a silicone resin powder, a silica sol powder, an aluminum sol powder, a silicon oxide micronized powder, a vanadium oxide powder, a silicon powder, a borax and a rare earth oxide micronized powder, and a corresponding mass ratio is 20:10:4:1:5:1:1:2:0.5:0.5:0.5:0.5. The silicon carbide powders in the main materials have a good synergistic effect to improve strength of the repair material. The binding agents include low-, medium- and high-temperature binding agents for a full range of temperatures, so the repair material could gain strength continuously without a collapse temperature.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: July 12, 2022
    Assignee: NAVAL UNIVERSITY OF ENGINEERING
    Inventors: Zichun Yang, Guobing Chen, Feiyue Yang, Shuang Zhao, Zhifang Fei, Jun Chen, Jun Li, Lei Zhang, Kunfeng Li, Wencai Sun
  • Interleaved LLC current equalizing converter
    Patent number: 9735685
    Abstract: The present invention discloses an interleaved LLC convertor with current sharing.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 15, 2017
    Assignee: Eaton Corporation
    Inventors: Kunfeng Li, Huali Zhang, Denis Deng, Jack Gu, Yuefeng Yang
  • INTERLEAVED LLC CURRENT EQUALIZING CONVERTER
    Publication number: 20150357921
    Abstract: The present invention discloses an interleaved LLC convertor with current sharing.
    Type: Application
    Filed: October 17, 2013
    Publication date: December 10, 2015
    Inventors: Kunfeng Li, Huali Zhang, Denis Deng, Jack Gu, Yuefeng Yang