Patents by Inventor Takefumi Shimizu

Takefumi Shimizu 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).

  • Quinoline derivative and antiulcer agent containing said quinoline derivative
    Patent number: 5215999
    Abstract: The present invention discloses a quinoline derivative and salt thereof of the following general formula: ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n have the same meanings as defined above). Such a derivative is useful as an antiulcer agent.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: June 1, 1993
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Kenji Otsubo, Takefumi Shimizu, Katsuya Yamasaki