Patents by Inventor Keizo Tanabe

Keizo Tanabe 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).

  • Method for manufacture of poly-fatty acids and maleic anhydride-added fatty acids
    Patent number: 4150041
    Abstract: A poly-fatty acid or maleic anhydride-added fatty acid is manufactured by continuously passing a higher unsaturated fatty acid, alone or in combination with maleic anhydride, over a catalyst having phosphoric acid deposited on a synthetic silica-alumina carrier.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: April 17, 1979
    Assignee: Agency of Industrial Science & Technology
    Inventors: Osamu Suzuki, Keizo Tanabe, Tetsutaro Hashimoto
  • Method for manufacture of poly-fatty acids
    Patent number: 4069235
    Abstract: A poly-fatty acid is manufactured by continuously passing a higher unsaturated fatty acid, over a catalyst having phosphoric acid deposited on a synthetic silica-alumina carrier.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: January 17, 1978
    Assignee: Agency of Industrial Science & Technology
    Inventors: Osamu Suzuki, Keizo Tanabe, Tetsutaro Hashimoto