Patents by Inventor Seiichi Ikeguchi

Seiichi Ikeguchi 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).

  • 2-pyrrolidone-5-carboxylic acid compounds useful for the treatment of mental disorders
    Patent number: 4933354
    Abstract: In one embodiment this invention provides novel 2-pyrrolidone-5-carboxylic acid compounds, and pharmaceutically acceptable salts thereof, represented by the formula: ##STR1## where n is an integer with a value of 1-4. The compounds have application in the treatment of mental disorders such as dementia and amnesis.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: June 12, 1990
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Seiichi Ikeguchi, Yukihiko Kinoshita, Hiroshi Kaneto, Yukiyoshi Ajisawa
  • Thiazolidine compounds and therapeutic method
    Patent number: 4857524
    Abstract: In one embodiment this invention provides novel thiazolidine compounds, such as 3-[R-(-)-3-benzyloxycarbonylthiazolidine-4-carbonyl]thiazolidine corresponding to the formula: ##STR1## An invention thiazolidine compound exhibits prolyl endopeplidase inhibitory activity, and has utility as a therapeutic agent for the treatment of dementia and amnesia disorders.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: August 15, 1989
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Sunao Furukawa, Tadashi Yoshimoto, Yukiyoshi Ajisawa, Seiichi Ikeguchi, Yukihiko Kinoshita