Patents by Inventor Osasi Takaiti

Osasi Takaiti 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).

  • Bronchodilating 8-hydroxy-5-{(1R)-1-hydroxy-2-[N-((1R)-2-(p-methoxyphenyl)-1-methylethyl )-amino]ethyl} carbostyril
    Patent number: 4579854
    Abstract: A novel carbostyril derivative of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, and a process for preparing same. The compound (I) shows potent bronchodilating activity and is useful as a bronchodilator.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: April 1, 1986
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Takeo Iwakuma, Akira Tsunashima, Katsuo Ikezawa, Osasi Takaiti
  • 8-Azaprostanoic acid derivatives
    Patent number: 4113873
    Abstract: Novel 8-azaprostanoic acid derivatives and processes for preparing the same are disclosed. Said 8-azaprostanoic acid derivatives are shown by the formula: ##STR1## wherein R.sup.1 is hydrogen or alkyl of 2 to 6 carbon atoms, R.sup.2 is hydrogen or methyl and R.sup.3 is hydrogen, or R.sup.1 is methyl when R.sup.2 is hydrogen and R.sup.3 is methyl. They exhibit Prostaglandin-like activities and are useful as bronchodilators, stimulating agents for childbirth, abortion or labor, and/or for the treatment of gastro-intestinal disorders.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: September 12, 1978
    Assignee: Tanabe Seiyaku Co. Ltd.
    Inventors: Junichi Himizu, Shoichi Harigaya, Shigeyoshi Saijo, Masao Wada, Katsuyuki Noguchi, Osasi Takaiti
  • Bronchodilating 8-hydroxy-5-(1R)-1-hydroxy-2-(N-((1R)-2-(p-methoxyphenyl)-1-methylethyl) -amino)ethyl) carbostyril and intermediates thereof
    Patent number: RE33024
    Abstract: A novel carbostyril derivative of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, and a process for preparing same. The compound (I) shows potent bronchodilating activity and is useful as a bronchodilator.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: August 15, 1989
    Assignee: Tanabe Seiyaku Co. Ltd.
    Inventors: Takeo Iwakuma, Akira Tsunashima, Katsuo Ikezawa, Osasi Takaiti