Patents by Inventor Kenji Sumitani

Kenji Sumitani 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).

  • Powder composition for soft drink
    Patent number: 4201794
    Abstract: A powder composition which comprises an anthraquinonoid compound, one or more sorts of organic acids and one or more sorts of alkaline salts wherein the acid(s) or the salt(s) is (are) coated with water-soluble substance(s) so that the PH value of the solution into which the powder has been projected be suddenly changed in order to bring about a sudden change of the color of anthraquinonoid in the solution.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: May 6, 1980
    Assignee: Kawakami Kagaku Kogyo Company Ltd.
    Inventor: Kenji Sumitani