Patents by Inventor Yoshihisa Sada

Yoshihisa Sada 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).

  • Substituted quinolone derivatives and pharmaceuticals containing the same
    Patent number: 6028081
    Abstract: Substituted quinolone derivatives represented by the following formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted (hetero)aryl group, R.sup.2 represents H or an alkoxycarbonyl, substituted aminocarbonyl, cyano or like group, and R.sup.3 and R.sup.4 each independently represent H or a substituted alkyl, aryl, amino or like group, and salts thereof; pharmaceuticals containing the same. These derivatives and salts have excellent anti-ulcer activities.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: February 22, 2000
    Assignee: SSP Co., Ltd.
    Inventors: Yoshihisa Sada, Shigeru Adegawa, Kinichi Mogi, Haruyoshi Honda, Hiromichi Eto, Shinichi Morimoto, Junji Okawa, Norimitsu Umehara, Susumu Sato