Patents by Inventor Takuro Tokuda

Takuro Tokuda 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).

  • Control of plant virus diseases
    Patent number: 4331685
    Abstract: Plants which have been sprayed with N-alkylalkanolamines and/or N-alkylalkanolammonium salts have been found to show much less tendency of suffering plant virus diseases when applied as they are or after being dissolved in solvent. The N-alkylalkanolamine is prepared by reacting an alkanolamine with an alkyl halide in the presence of a basic substance.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: May 25, 1982
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takuro Tokuda, Susumu Ikeda, Yoshikazu Kubota
  • Control of plant-virus diseases
    Patent number: 4269857
    Abstract: Disclosed herein control of plant-virus diseases by applying a compound obtained by reducing the reaction product of an n-alkylamine with a sugar or a salt thereof on the plant to be protected from the plant-virus as an active ingredient.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: May 26, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takuro Tokuda, Susumu Ikeda, Yoshikazu Kubota, Tutomu Takagi, Yuuichi Kokagi