Patents by Inventor Fujiko Koono

Fujiko Koono 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 derivatives
    Patent number: 4933447
    Abstract: A quinoline derivative represented by the following formula is disclosed. ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group which may contain a substituent and R.sub.2 represents an alkyl group which may contain a substituent, or R.sub.1 and R.sub.2 in combination with each other and with the adjacent nitrogen atom from a ring which may contain a nitrogen atom other than said adjacent nitrogen atom, an oxygen atom, or a substituent, and R.sub.3 represents a cyano group, a carbamoyl group, or a lower alkoxycarbonyl group. The compound exhibits superior cardiotonic activity and vasodilative activity, and thus is effective as a medicine.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: June 12, 1990
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Fujiko Koono, Norimitsu Umehara, Hideaki Matsuda, Tatsuhiko Katori