Patents by Inventor Kenzo Kashiwagi

Kenzo Kashiwagi 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).

  • Packaging material for photosensitive materials
    Patent number: 4359499
    Abstract: A packaging material for photosensitive materials is disclosed consisting of a uniaxially oriented thermoplastic film having formed thereon at least one flexible layer, which is not uniaxially oriented, having a tear strength less than that of the film in the direction perpendicular to the axis of orientation of the film.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: November 16, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mutsuo Akao, Kenzo Kashiwagi
  • Wrapping material for light-sensitive materials
    Patent number: 4337285
    Abstract: A wrapping material for light-sensitive materials comprising at least two monoaxially drawn films composed of high density polyethylene having a density of at least 0.94 g/cm.sup.3, which are bonded with an adhesive layer containing an aluminium paste or an aluminium powder so that drawing axes of the films cross each other at an angle of from 45.degree. to 90.degree..
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: June 29, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mutsuo Akao, Kenzo Kashiwagi
  • Packaging material for photosensitive materials comprising polyolefin layers
    Patent number: 4258848
    Abstract: A packaging material for photosensitive materials comprising a laminate of two or more high-density polyethylene films incorporating carbon black, the films being uniaxially stretched at a draw ratio in the range of from about 2.2 to 4.2 and the stretching axis of one film forming an angle of from about 45 to 90 degrees with those of the film(s) nearest it.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: March 31, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mutsuo Akao, Kenzo Kashiwagi, Koji Inoue