Patents by Inventor Kousuke Hamada

Kousuke Hamada 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).

  • Adhesive sheet
    Patent number: 5514435
    Abstract: Disclosed is an adhesive sheet comprising a base sheet, an undercoat layer formed on the base sheet, a release agent layer formed on the undercoat layer, an adhesive layer formed on the release agent layer and a face stock disposed on the adhesive layer, wherein the undercoat layer comprises (a) a copolymer obtained by emulsion-copolymerizing at least one hydroxyl group-containing (meth)acrylic ester with at least one of other monomers copolymerizable therewith and (b) a pigment.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: May 7, 1996
    Assignee: New Oji Paper Co., Ltd.
    Inventors: Hideaki Suzuki, Kousuke Hamada
  • Process for electrostatic recording comprising charging dielectric sheet to polarity opposite of imaging charge
    Patent number: 4944959
    Abstract: Disclosed is an electrostatic recording medium comprising an electroconductive support and as formed thereon a dielectric layer containing an insulating resin and a pigment, said dielectric layer carrying a surface static charge of a polarity opposite to that of a charge to be applied for image formation.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: July 31, 1990
    Assignee: Kanzaki Paper Manufacturing Company, Limited
    Inventors: Hisanori Yagi, Kousuke Hamada, Isamu Nakano, Yoshihiro Nishimura, Hajime Matsubayashi, Hisashi Tani
  • Electrostatic recording medium
    Patent number: 4931359
    Abstract: Disclosed is an electrostatic recording medium comprising an electroconductive support and a dielectric layer formed on the electroconductive support and containing an insulating resin and a pigment, characterized in that the pigment comprises kaolin having a quartz content of not more than 2% by weight and that the dielectric layer has, on the surface thereof, projections based on the pigment and having an equivalent diameter of 5-15 um as spacers.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: June 5, 1990
    Assignee: Kanzaki Paper Manufacturing Company, Ltd.
    Inventors: Hisanori Yagi, Kousuke Hamada, Isamu Nakano, Yoshihiro Nishimura