Patents by Inventor Katsushige Koge

Katsushige Koge 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).

  • Rust-preventive agent
    Patent number: 4568753
    Abstract: Improved rust-preventive compounds are provided which are strongly effective with both iron and copper metals. The compound of the invention comprise benzothiazole-substituted carboxylic acids, and their salts. Suitable salts may include alkali metal, alkaline earth metal, ammonium and substituted ammonium salts.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: February 4, 1986
    Assignee: Sanshin Kagaku Kogyo Co., Ltd.
    Inventors: Sumio Akashi, Katsushige Koge