Patents by Inventor Kosuke Yasuda

Kosuke Yasuda 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).

  • Benzenesulfonamide derivative and process for preparing thereof
    Patent number: 5728706
    Abstract: A benzenesulfonamide derivative of the formula ?I!: ##STR1## wherein Ring A and Ring B are the same or different and each substituted or unsubstituted benzene ring, Q is a single bond or a group of the formula: --O--, --S--, --SO--, --SO.sub.2 -- or --CH.sub.2 --, Y is a group of the formula: --O--, --S-- or --NH--, Alk is lower alkylene group or lower alkenylene group, Z is a single bond or a group of the formula: --O-- or --NH--, R is a substituted or unsubstituted aromatic heterocyclic or aryl group, R.sup.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: March 17, 1998
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Koichiro Yamada, Kosuke Yasuda, Kohei Kikkawa, Rikako Kohno
  • Benzocycloheptene derivative and process for preparation thereof
    Patent number: 5252589
    Abstract: There is disclosed a benzocycloheptene compound of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, a halogen atom or a lower alkoxy group, R.sup.2 and R.sup.3 are independently selected from hydrogen atom, a lower alkyl group and a lower alkenyl group, or R.sup.2 and R.sup.3 combine together with adjacent nitrogen atom to form a heteromonocyclic group, or a pharmaceutically acceptable salt thereof, which has an excellent inhibitory activity against contraction of urinary bladder.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: October 12, 1993
    Assignee: Tanabe Seikayu Co., Ltd.
    Inventors: Masakatsu Ozeki, Kosuke Yasuda, Masamichi Morimoto, Tohru Ishizuka, Kunio Nosaka