Patents by Inventor Koyata Nitta

Koyata Nitta 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).

  • 5,6-dihydroimidazo[2,1-b]thiazole-2-carboxamide derivatives of salts thereof
    Patent number: 4910315
    Abstract: 5,6-dihydroimidazo[2,1-b]thiazole-2-carboxamide derivatives represented by the following general formula [I] ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are either the same or different and mean individually a hydrogen atom or lower alkyl group, Y denotes a specific phenyl-containing substituted amino group, and their salts. These compounds have excellent immuno-modulating activities.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: March 20, 1990
    Assignees: Kumiai Chemical Industry Co., Toyo Jozo Co., Ltd.
    Inventors: Itaru Yamamoto, Kenji Matsunari, Koyata Nitta, Kensuke Shibata, Noriyasu Takayanagi
  • 5,6-dihydroimidazo(2,1-b)thiazole-2-carboxamide derivatives or salts thereof
    Patent number: 4736038
    Abstract: 5,6-dihydroimidazo[2,1-b]thiazole-2-carboxamide derivatives represented by the following general formula [I] ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are either the same or different and mean individually a hydrogen atom or lower alkyl group, Y denotes a specific phenyl-containing substituted amino group, and their salts. These compounds have excellent immuno-modulating activities.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: April 5, 1988
    Assignees: Kumiai Chemical Industry Co., Ltd., Toyo Jozo Co., Ltd.
    Inventors: Itaru Yamamoto, Kenji Matsunari, Koyata Nitta, Kensuke Shibata, Noriyasu Takayanagi