Patents by Inventor Hisao Kishimoto

Hisao Kishimoto 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).

  • High tensile strength film having constant tear-direction
    Patent number: 5560966
    Abstract: A high tensile strength film has at least one small aperture or slit for tearing the film in a direction normal to a longitudinal direction of the film. The aperture has at least one apex which has an acute angle and is directed toward a direction normal to a longitudinal direction of the film. The aperture is in the form of a triangle, a polygon, an oval or a crescent moon.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 1, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisao Kishimoto, Akifumi Hirata