Patents by Inventor Isamu Fujikawa

Isamu Fujikawa 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).

  • Magnesium oxide powder, thermally conductive filler, resin composition, and production method for magnesium oxide powder
    Patent number: 11884553
    Abstract: This magnesium oxide powder contains secondary particles in which a plurality of primary particles of magnesium oxide having a crystal phase and a grain boundary phase are at least partially fused together by the grain boundary phase, and a median diameter obtained by a laser diffraction scattering method is 300 ?m or less.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: January 30, 2024
    Assignee: UBE MATERIAL INDUSTRIES, LTD.
    Inventors: Isamu Fujikawa, Masamichi Nakagawa, Takashi Hamaoka, Takeshi Himoto, Seiji Yamaguchi, Kunio Watanabe
  • MAGNESIUM OXIDE POWDER, THERMALLY CONDUCTIVE FILLER, RESIN COMPOSITION, AND PRODUCTION METHOD FOR MAGNESIUM OXIDE POWDER
    Publication number: 20230192504
    Abstract: This magnesium oxide powder contains secondary particles in which a plurality of primary particles of magnesium oxide having a crystal phase and a grain boundary phase are at least partially fused together by the grain boundary phase, and a median diameter obtained by a laser diffraction scattering method is 300 µm or less.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 22, 2023
    Applicant: Ube Material Industries, Ltd.
    Inventors: Isamu Fujikawa, Masamichi Nakagawa, Takashi Hamaoka, Takeshi Himoto, Seiji Yamaguchi, Kunio Watanabe