Patents by Inventor Yasuhiro Komatsu

Yasuhiro Komatsu 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).

  • Antitumor agent
    Patent number: 4320141
    Abstract: This invention relates to an antitumor agent comprising as the active ingredient .alpha.-tocopherol vitamin A acid ester and to novel .alpha.-tocopherol-13-cis-vitamin A acid ester. Vitamin A acid has heretofore been known to possess antitumor activity but it is defective in that its toxicity is extremely high. The active ingredient of this invention is characterized by its high antitumor activity and extremely low toxicity.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: March 16, 1982
    Inventors: Yasuhiro Komatsu, Michiko Nagai
  • Isoprenylamines
    Patent number: 4265910
    Abstract: This invention relates to new isoprenylamines and the acid addition salts thereof. Further, the invention is concerned with antiviral agents for vertebrate animal, said agents containing as their active ingredients isoprenylamine or physiologically acceptable acid addition salt thereof.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: May 5, 1981
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Yoshiyuki Tahara, Hiroyasu Koyama, Yasuhiro Komatsu, Reiko Kubota, Toshihiro Takahashi