Patents by Inventor Yoshihiko Matsuyama

Yoshihiko Matsuyama 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).

  • Patent number: 11976171
    Abstract: A polyimide resin precursor is obtained by allowing a diamine and an acid anhydride to react with each other. The diamine includes p-phenylenediamine, a bis(aminophenoxy)benzene, and 2-(4-aminophenyl)benzoxazol-5-amine. The acid anhydride includes a biphenyl tetracarboxylic dianhydride. The content of the p-phenylenediamine is 30 to 75% by mol, the content of the bis(aminophenoxy)benzene is 10 to 30% by mol, and the content of the 2-(4-aminophenyl)benzoxazol-5-amine is 10 to 50% by mol, with respect to the total of the diamine. The content of the biphenyl tetracarboxylic dianhydride is 78% by mol or more with respect to the total of the acid anhydride.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: May 7, 2024
    Assignee: Arisawa MFG. Co., Ltd.
    Inventors: Yoshinori Sato, Hiroyuki Matsuyama, Yoshihiko Konno
  • Patent number: 11946143
    Abstract: A laminate comprising a substrate; and a plating-forming layer disposed on at least one surface of both surfaces of the substrate and containing a thermoplastic resin and a plating catalyst, wherein the plating-forming layer further satisfies conditions of the following (1) and/or (2), (1) the plating-forming layer contains a dispersing agent for dispersing the plating catalyst (2) an abundance of the plating catalyst on a surface side of the plating-forming layer is higher than an abundance of the plating catalyst on the substrate side of the plating-forming layer.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: April 2, 2024
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Kenji Nakamura, Yoshihiko Konno, Hiroyuki Matsuyama, Makoto Tai, Shuichi Fujita
  • Patent number: 4701024
    Abstract: In order to make it possible to be adapted to be used for an integrated liquid crystal panel having a built-in direct touch-entry enabling device, a liquid crystal material made by dispersing many needle-shaped magnetic substance particles respectively coated with a surface active agent in a well known liquid crystal substance and a method of making the same. The liquid material can be utilized in the form of many encapsulated liquid material units combined with one another. In case such encapsulated liquid crystal material is used for a liquid crystal device, it need not be sealed with glass or the like and can be directly applied to paint any required part and, even if the painted part is curved during the use, it can develop its performance.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: October 20, 1987
    Assignee: Dai-ichi Seiko Kabushiki Kaisha
    Inventors: Shunsuke Kobayashi, Yoshihiko Matsuyama, Masayoshi Koutake