Patents by Inventor Shigeru Souda

Shigeru Souda 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).

  • Patent number: 4479954
    Abstract: The carboximide derivatives of the formula: ##STR1## and pharmaceutically acceptable salts thereof; wherein X represents a group of the formula: ##STR2## Z represents a hydrogen atom or a group of the formula: ##STR3## wherein R represents an alkyl group, an aralkyl group, an aryl group, a cycloalkyl group, an alkenyl group, an arylalkenyl group, a pyridyl group or a substituted amino group; Y represents an alkyl group, an aralkyl group, an aryl group, a substituted or unsubstituted pyridyl group, a substituted or unsubstituted pyrimidyl group or a benzothiazolyl group; and m represents an integer of 2 or 3 and processes for the production thereof. The derivatives and their salts possess hypoglycemic activity and are useful for treating diabetes.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: October 30, 1984
    Assignee: Eisai Co., Ltd.
    Inventors: Noriyasu Hirose, Shigeru Souda, Kazutoshi Miyake, Shizuo Kuriyama, Kazuyasu Usuki, Yasuhiro Akiyama, Naoko Sakabe, Hidetoshi Kawashima
  • Patent number: 4376780
    Abstract: Novel phenethylamine derivatives represented by the general formula: ##STR1## wherein R is a lower alkyl group, C.sub.n H.sub.2n is a branched or straight alkylene group, A is a phenyl group unsubstituted or substituted with hydroxy, a lower alkoxy or a lower alkylene dioxy group, and n is an integer from 1 to 4, and pharmacologically acceptable acid addition salts thereof, and bronchdilator containing the same. These bronchdilator have an intense and durable bronchdilating effect and a weak heart stimulating action.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: March 15, 1983
    Assignee: Eisai Co., Ltd.
    Inventors: Noriyasu Hirose, Shigeru Souda
  • Patent number: 4317930
    Abstract: Novel phenethylamine derivatives represented by the general formula: ##STR1## wherein R is a lower alkyl group, C.sub.n H.sub.2n is a branched or straight alkylene group, A is a phenyl group unsubstituted or substituted with hydroxy, a lower alkoxy or a lower alkylene dioxy group, and n is an integer from 1 to 4, and pharmacologically acceptable acid addition salts thereof, and bronchdilator containing the same. These bronchdilator has an intense and durable bronchdilating effect and a weak heart stimulating action.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: March 2, 1982
    Assignee: Eisai Co., Ltd.
    Inventors: Noriyasu Hirose, Shigeru Souda