Patents by Inventor Takuzo Yamamoto

Takuzo Yamamoto 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).

  • Compound with immunopotentiating activity and production and uses thereof
    Patent number: 4335250
    Abstract: A new compound is produced which has the general formula: ##STR1## wherein R represents hydrogen atom or a lower alkyl group and which exhibits an immunopotentiating activity. This new compound as well as its pharmaceutically acceptable salts and hydrates are useful for immunotherapy and treatment of immune diseases and disorders in living animals including human beings. The new compound can be produced by reduction of a hydroxyterephthalic acid alkyl ester or by esterification of the corresponding 3-hydroxy-4-(hydroxymethyl)-benzoic acid.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: June 15, 1982
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Hamao Umezawa, Tomio Takeuchi, Takaaki Aoyagi, Masaaki Ishizuka, Hajime Morishima, Takuzo Yamamoto, Junji Yoshizawa, Masaaki Hosoi, Ikuo Matsumoto
  • Pharmacological compound with immunopotentiating activity and production and uses thereof
    Patent number: 4238507
    Abstract: A new compound having the formula ##STR1## and now designated forphenicinol is produced, which exhibits an immunopotentiating activity. This new compound as well as its pharmaceutically acceptable salts and hydrates are useful for immunotherapy and treatment of immune diseases and disorders in living animals, including human beings. The new compound can be produced by hydrolysis of the corresponding aminonitrile compound of the formula ##STR2## or by reduction of forphenicine.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: December 9, 1980
    Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, Tomio Takeuchi, Takaaki Aoyagi, Masaaki Ishizuka, Hajime Morishima, Ikuo Matsumoto, Takuzo Yamamoto