Patents by Inventor Kazuyo Kawaguchi

Kazuyo Kawaguchi 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).

  • Antibacterial pharmaceutical compositions and processes for preparation thereof
    Patent number: 3962443
    Abstract: This invention provides compounds of the following formula ##SPC1##Wherein R.sub.1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 2 to 4 carbon atoms, a benzyl group, a benzyl group subsituted by methoxy, a phenyl group, a propargyl group or an acyl group; R.sub.2 is hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkyl group having 2 to 4 carbon atoms substituted by hydroxy or halogen, a vinyl group, an allyl group, or a benzyl group R.sub.3 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms;And salts thereof, and processes for preparing them. Some of the compounds have antibacterial activities.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: June 8, 1976
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Shinsaku Minami, Jun-ichi Matsumoto, Kazuyo Kawaguchi, Shinsaku Mishio, Masanao Shimizu, Yoshiyuki Takase, Shinichi Nakamura