Patents by Inventor Kikuko Tanada

Kikuko Tanada 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).

  • Amine derivatives, salts thereof, process for preparing the same and an anti-ulcer agent containing the same
    Patent number: 5120746
    Abstract: This invention relates to amine derivatives and salts thereof. These compounds have an anti-ulcer activity which is effective to human beings and animals. This disclosure relates to such compound, a process for the preparation thereof and an anti-ulcer agent containing the same.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: June 9, 1992
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Shiro Hirai, Hiroshi Hirano, Hirotoshi Arai, Yasuo Kiba, Hisanari Shibata, Yoshikazu Kusayanag, Minako Yotsuji, Kazuhiko Hashiba, Kikuko Tanada
  • Novel amine derivatives, salts thereof and an anti-ulcer agent containing the same
    Patent number: 4923882
    Abstract: This invention relates to amine derivatives and salts thereof. These compounds have an anti-ulcer activity which is effective to human beings and animals. This disclosure relates to such compound, a process for the preparation thereof and an anti-ulcer agent containing the same.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: May 8, 1990
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Shiro Hirai, Hiroshi Hirano, Hirotoshi Arai, Yasuo Kiba, Hisanari Shibata, Yoshikazu Kusayanag, Minako Yotsuji, Kazuhiko Hashiba, Kikuko Tanada
  • Intermediates for urea and thiourea derivatives
    Patent number: 4643849
    Abstract: This invention relates to amine derivatives and salts thereof. These compounds have an anti-ulcer activity which is effective to human beings and animals. This disclosure relates to such compounds, a process for the preparation thereof and an anti-ulcer agent containing the same.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: February 17, 1987
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Shiro Hirai, Hiroshi Hirano, Hirotoshi Arai, Yasuo Kiba, Hisanari Shibata, Yoshikazu Kusayanagi, Minako Yotsuji, Kazuhiko Hashiba, Kikuko Tanada