Patents by Inventor Ryuji Tachikawa

Ryuji Tachikawa 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).

  • 2-Aminoacetamido-.alpha.-phenylbenzylideneaminoalkanol derivatives and process for the preparation thereof
    Patent number: 4022832
    Abstract: Aminoalkanol derivatives having the formula ##STR1## wherein R.sub.1 represents hydrogen atoms or a halogen atom, R.sub.2 represents hydrogen atom or fluorine atom and A represents an alkylene group having 1-4 carbon atoms. The aminoalkanol derivatives are useful as a minor tranquilizer and can be prepared by reacting the corresponding 2-amino-.alpha.-phenylbenzylideneaminoalkanol derivative with an aminocarboxylic acid.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: May 10, 1977
    Assignee: Sankyo Company Limited
    Inventors: Ryuji Tachikawa, Tetsuo Miyadera, Atsusuke Terada, Toshiharu Kamioka, Syunji Naruto