Patents by Inventor Jinbin Pi

Jinbin Pi 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).

  • Method for coating magnetic powder core with sodium silicate
    Patent number: 12283415
    Abstract: The present disclosure discloses a method for coating a magnetic powder core with sodium silicate, including: using polyoxyethylene laurylether phosphate as a dispersant for sodium silicate and lignosulfonate as a dispersant for a metal magnetic powder, mixing a dispersed sodium silicate solution and a dispersed metal magnetic powder, coating the dispersed metal magnetic powder, and drying: adding an insulating adhesive and a lubricant, subjecting the resulting mixture to a compression molding, and finally, carrying out a high-temperature annealing treatment to obtain a sodium silicate coated magnetic powder core.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 22, 2025
    Assignees: JIANGXI EVERTECH NEW MATERIAL CO., LTD., JIANGXI EVERTECH HOLDING CO., LTD.
    Inventors: Jinbin Pi, Miantuan Zhang, Shenghua Mao, Junjie Chen, Yuyuan Wen, Xin Jin
  • METHOD FOR COATING MAGNETIC POWDER CORE WITH SODIUM SILICATE
    Publication number: 20220415571
    Abstract: The present disclosure discloses a method for coating a magnetic powder core with sodium silicate, including: using polyoxyethylene laurylether phosphate as a dispersant for sodium silicate and lignosulfonate as a dispersant for a metal magnetic powder, mixing a dispersed sodium silicate solution and a dispersed metal magnetic powder, coating the dispersed metal magnetic powder, and drying: adding an insulating adhesive and a lubricant, subjecting the resulting mixture to a compression molding, and finally, carrying out a high-temperature annealing treatment to obtain a sodium silicate coated magnetic powder core.
    Type: Application
    Filed: April 27, 2021
    Publication date: December 29, 2022
    Applicants: JIANGXI EVERTECH NEW MATERIAL CO., LTD., JIANGXI EVERTECH HOLDING CO., LTD.
    Inventors: Jinbin Pi, Miantuan Zhang, Shenghua Mao, Junjie Chen, Yuyuan Wen, Xin Jin
  • Method for Secondary Coating of Magnetic Powder Cores Using Phosphoric Acid and Nano-calcium Carbonate
    Publication number: 20220223340
    Abstract: Disclosed is a method for secondary coating of a magnetic powder core with phosphoric acid and nano-calcium carbonate. In the disclosure, magnetic powder and a phosphoric acid solution are stirred and mixed to obtain a Fe(H2PO4)2 primary coating layer on a surface of the magnetic powder through reaction, and then nano-calcium carbonate is added, stirred and mixed to obtain a Ca(H2PO4)2 secondary coating layer on the surface of the magnetic powder through reaction.
    Type: Application
    Filed: April 27, 2021
    Publication date: July 14, 2022
    Applicants: Jiangxi Evertech New Material Co., LTD., Jiangxi Evertech Holding Co., LTD
    Inventors: Miantuan Zhang, Shenghua Mao, Junjie Chen, Jinbin Pi, Yuyuan Wen, Xin Jin