Patents by Inventor Hirotazu Nakanishi

Hirotazu Nakanishi 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 composition comprising polyether having silyl group
    Patent number: 4507469
    Abstract: A curable composition comprising an organic polymer containing at least one hydrolyzable a group attached to the silicon per polymer molecule and having a molecular weight within the range of 300 to 15,000, wherein a curing catalyst comprising tin II salt of organic carboxylic acid and/or lead II salt of organic carboxylic acid is used in combination with an acid material and/or a basic material, thereby unexpectedly improving the set resistance thereof. The composition may be utilized as a sealant which cures upon exposure to moisture to form a rubber like substance having improved set resistance.
    Type: Grant
    Filed: November 8, 1983
    Date of Patent: March 26, 1985
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tetsuo Mita, Hirotazu Nakanishi, Junji Takase, Katsuhiko Isayama, Nobutaka Tani