Patents by Inventor Toshiaki Okiyama

Toshiaki Okiyama 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).

  • Transfer film for electrophotographic copier
    Patent number: 4420528
    Abstract: A transfer film for an electrophotographic copier comprising a polysulfone resin is disclosed. The film is matted and has a dynamic friction coefficient of from 0.6 to 2.0, a static friction coefficient of from 0.8 to 2.3, a surface resistance of from 1.times.10.sup.10 to 1.times.10.sup.15 ohms, at least one side of said film having a surface roughness of 1.0 micron or more.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: December 13, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiaki Okiyama
  • Transfer film for use in electrophotographic copiers
    Patent number: 4352847
    Abstract: A transfer film for use in electrophotographic copiers comprising a matted plastic film having a UL temperature index of at least 120.degree. C. and at least one side of which has a surface roughness of at least 1.0 micron.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: October 5, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiaki Okiyama
  • Electrophotographic copying film
    Patent number: 4071362
    Abstract: An electrophotographic coating film having an improved receptivity for electrophotographic toners and a reduced tendency to blocking comprises a thermally resistant base film and a coating layer containing 0.1 to 10% by weight of one or more matting agents and formed of resins which contain a styrene-acrylate or -methacrylate ester copolymer containing at least 10% by weight of copolymerized styrene.
    Type: Grant
    Filed: January 5, 1973
    Date of Patent: January 31, 1978
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Haruo Takenaka, Toshiaki Okiyama, Toshio Kawamata