Patents by Inventor Shyoei Hirayama

Shyoei Hirayama 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).

  • Fluorine-containing monomer and process for producing the same
    Patent number: 4580981
    Abstract: Disclosed herein is a novel fluorine-containing monomer having one carbon-carbon double bond at one of the main molecular chain ends thereof and a molecular weight of 300 to 1600, obtained by bringing a fluorine-containing telomer having a molecular weight of 200 to 1500 and an OH group at one of the main molecular chain ends thereof into esterification with acryloyl chloride or methacryloyl chloride.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: April 8, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Nobuo Bannai, Hideyuki Yasumi, Shyoei Hirayama