Patents by Inventor Takeyuki KITAGAWA

Takeyuki KITAGAWA 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).

  • Curable resin composition and curable sheet
    Patent number: 11718770
    Abstract: A curable resin composition includes: a first epoxy resin having a polyoxyalkylene chain; a second epoxy resin different from the first epoxy resin; a thermoplastic resin having a weight average molecular weight of 300,000 or less, and having a reactive functional group; at least one selected from the group consisting of a curing agent and a curing accelerator; and an inorganic filler.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: August 8, 2023
    Assignee: NAGASE CHEMTEX CORPORATION
    Inventors: Takayuki Hashimoto, Eiichi Nomura, Katsushi Kan, Daisuke Mori, Yosuke Oi, Yukio Yada, Takashi Hiraoka, Takeyuki Kitagawa
  • CURABLE RESIN COMPOSITION AND CURABLE SHEET
    Publication number: 20210403765
    Abstract: A curable resin composition includes: a first epoxy resin having a polyoxyalkylene chain; a second epoxy resin different from the first epoxy resin; a thermoplastic resin having a weight average molecular weight of 300,000 or less, and having a reactive functional group; at least one selected from the group consisting of a curing agent and a curing accelerator; and an inorganic filler.
    Type: Application
    Filed: July 12, 2019
    Publication date: December 30, 2021
    Applicant: NAGASE CHEMTEX CORPORATION
    Inventors: Takayuki HASHIMOTO, Eiichi NOMURA, Katsushi KAN, Daisuke MORI, Yosuke OI, Yukio YADA, Takashi HIRAOKA, Takeyuki KITAGAWA