Patents by Inventor Shiro Yamane

Shiro Yamane 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).

  • Thermal direct master
    Patent number: 4974513
    Abstract: A thermal direct master for lithography, which comprises a water-resisting substrate and a thermosensitive recording layer formed thereon, which comprises as the main components an inorganic pigment, a binder agent, a thermofusible material and a hydrophilic modified silicon oil. The above-mentioned hydrophilic modified silicon oil may be selected from the group consisting of a carboxyl-modified silicone oil, an alkyl higher alcohol eseter modified silicone oil, an alcohol-modified silicone oil, polyether-modified silicon oil, and an .alpha.-olefin modified silicone oil.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: December 4, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Shiro Yamane, Fumiaki Arai
  • Electrophotographic light-sensitive member with thin overlayer
    Patent number: 4469771
    Abstract: Electrophotographic light-sensitive member having a protective coating on a photoconductive layer of the light-sensitive member, said protective coating consisting of an organic high polymer containing Lewis acid.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: September 4, 1984
    Assignee: Ricoh Co., Ltd.
    Inventors: Haruo Hasegawa, Kenji Seki, Hideaki Ema, Masahide Harada, Shiro Yamane
  • Electrophotographic light-sensitive member
    Patent number: 4225648
    Abstract: Electrophotographic light-sensitive member having a protective coating on a photoconductive layer of the light-sensitive member, said protective coating consisting of an organic high polymer containing Lewis acid.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: September 30, 1980
    Assignee: Ricoh Company, Ltd.
    Inventors: Haruo Hasegawa, Kenji Seki, Hideaki Ema, Masahide Harada, Shiro Yamane
  • Electro photosensitive materials with a protective layer
    Patent number: 3966471
    Abstract: A photosensitive material comprising a conductive support provided with a photoconductive layer and a protective layer, wherein the protective layer contains an organic aluminum compound.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: June 29, 1976
    Assignee: Ricoh Co., Ltd.
    Inventors: Haruo Hasegawa, Hiroyoshi Taniguchi, Shiro Yamane, Takao Igawa, Tomoshi Nagayama