Patents by Inventor Kunihito Okumura

Kunihito Okumura 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).

  • Benzoxazole derivatives
    Patent number: 4948900
    Abstract: Novel benzoxazole derivatives of the formula: ##STR1## wherein R is a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted cycloalkyl group or a substituted or unsubstituted heterocyclic group; Alk is single bond, a substituted or unsubstituted lower alkylene group, a lower alkenylene group or a lower alkynylene group; the group is a group of the formula: --CH.sub.2 -- or --CH.dbd., and a pharmaceutically acceptable salt thereof are disclosed. Said derivative (I) and a salt thereof are useful as therapeutic agents for diabetes.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 14, 1990
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ikuo Iijima, Masakatsu Ozeki, Kunihito Okumura, Masanori Inamasu
  • Benzoxazole derivatives
    Patent number: 4897393
    Abstract: Novel benzoxazole derivative of the formula: ##STR1## wherein R is a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted cycloalkyl group or a substituted or unsubstituted heterocyclic group; Alk is single bond, a substituted or unsubstituted lower alkylene group, a lower alkenylene group or a lower alkynylene group; the group ##STR2## is a group of the formula: --CH.sub.2 -- or --CH.dbd., and a pharmaceutically aceptable salt thereof are disclosed. Said derivative (I) and a salt thereof are useful as therapeutic agents for diabetes.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: January 30, 1990
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ikuo Iijima, Masakatsu Ozeki, Kunihito Okumura, Masanori Inamasu
  • Benzoxazine derivatives
    Patent number: 4824833
    Abstract: Novel benzoxazine derivative of the formula: ##STR1## wherein R.sup.1 is phenyl group or a substituted thiazolyl group; R.sup.2 is hydrogen atom or a lower alkyl group; Q is single bond or a lower alkylene group, or a salt thereof are disclosed. Said derivative (I) and a salt thereof are useful as therapeutic agents for diabetes.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: April 25, 1989
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ikuo Iijima, Masakatsu Ozeki, Kunihito Okumura, Masanori Inamasu