Patents by Inventor Kazuyuki Sanenobu

Kazuyuki Sanenobu 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).

  • Aromatic polyester film and process for producing the same
    Patent number: 5188774
    Abstract: The present invention enables production of an aromatic polyester film having no surface defect and a uniform thickness, while achieving a high productivity, by allowing a molten film of an aromatic polyester to adhere onto a rotating cooling drum to cool the molten film. The molten film has electrical properties characterized by a relatively small AC volume resistivity and has excellent basic properties necessary for adhering onto the rotating cooling drum.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: February 23, 1993
    Assignee: Teijin Limited
    Inventors: Shozo Nitta, Hideshi Kurihara, Kazuyuki Sanenobu, Tetsuo Ichihashi, Norio Takagi