Patents by Inventor Kousei Kawamuki

Kousei Kawamuki 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).

  • Bisphophonic acid derivatives and pharmaceutical compositions containing the same
    Patent number: 4973576
    Abstract: "Novel bisphosphonic acid derivatives, and a bone resorption-inhibitor and an anti-arthritis containing a bisphosphonic acid derivative represented by the formula (I): ##STR1## wherein R.sup.2 represents a hydrogen atom, an alkyl group, etc.,R.sup.2 represents a hydrogen atom or a lower alkanoyl group,R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be the same or different, each represents a hydrogen atom or lower alkyl group.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: November 27, 1990
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Shuichi Sakamoto, Makoto Takeuchi, Yasuo Isomura, Kunihiro Niigata, Tetsushi Abe, Kousei Kawamuki, Masafumi Kudou