Patents by Inventor Tetsuhide Kamino

Tetsuhide Kamino 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).

  • Method for the production of nuclear substituted cinnamoylanthranilic acid derivatives
    Patent number: 4486597
    Abstract: The present invention provides an improved method for producing a nuclear substituted cinnamoylanthranilic acid compound.Illustrative of the process is the reaction of 3,4-dimethoxybenzaldehyde with 2-carboxymalonanilic acid in an inert solvent medium in the presence of piperidine to provide an intermediate salt precipitate, and the salt is treated with an acidic reagent to yield N-(3,4-dimethoxycinnamoyl)anthranilic acid product.
    Type: Grant
    Filed: February 7, 1984
    Date of Patent: December 4, 1984
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kinji Iizuka, Tetsuhide Kamino, Ryoji Yamamoto, Hiromu Harada