Patents by Inventor Tatuo Oikawa

Tatuo Oikawa 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).

  • Easily-adhesive polyester film
    Patent number: 4699845
    Abstract: The present invention relates to an easily-adhesive polyester film comprising a polyester base film and a coating layer formed on one surface of the polyester base film, the coating layer comprising a mixture composed mainly of a higher fatty acid wax and a copolyester comprising as one comonomer component an alkali metal salt of an ester-forming aromatic sulfonic acid.The film of the present invention has excellent adhesiveness and has an improved anti-blocking property, and the film of the present invention is valuable as a base film for a magnetic recording medium, a capacitor or a photographic film.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: October 13, 1987
    Assignee: Toray Industries, Inc.
    Inventors: Tatuo Oikawa, Takao Izasa, Kazuo Okabe