Patents by Inventor Kenzi Tsuda

Kenzi Tsuda 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).

  • Patent number: 4818797
    Abstract: Disclosed herein are polyacrylate derivatives such as tetradecyldimethylbenzylammonium salt of polyacrylic acid and benzethonium salt of polyacrylic acid, which are effective as a paint ingredient to prevent the accumulation or attachment of marine organisms such as periphytons to ship's bottom. The polyacrylate derivatives have a very low degree of toxicity.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: April 4, 1989
    Assignee: Daicel Chemical Industries, Ltd.
    Inventor: Kenzi Tsuda