Patents by Inventor Morio Yoshida

Morio Yoshida 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).

  • Process for extending the life of an antifouling paint film
    Patent number: 4167597
    Abstract: A process for extending the life of an antifouling paint film which comprises applying onto an antifouling paint film a coating of a water-permeable graft polymer prepared by polymerizing one or more vinyl monomers in the presence of a hydrophilic polymer. The coating of the water-permeable graft polymer has an excellent water-resistance and a proper water-permeability by which an antifouling agent contained in the antifouling paint film can be leached into sea water and moreover the leaching rate can be controlled. As a result, the antifouling property of the paint film is exhibited for a long period of time.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: September 11, 1979
    Assignee: Toa Paint Company, Ltd.
    Inventors: Morio Yoshida, Ikuo Asato, Toru Semba, Kiyoshi Murase