Patents by Inventor Yukio Ohyama

Yukio Ohyama 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).

  • Roll
    Patent number: 6692422
    Abstract: A roll has a base material layer, a front surface layer, and stress relaxation layer. The base material layer is made of low hardness rubber material and provided on an outer circumference of a metal core. The stress relaxation layer is provided on the base material layer and made of material which is at least higher in hardness than the base material layer and larger in stretch than the front surface layer. The front surface layer is made of resin material and provided on the stress relaxation layer. The stress relaxation layer is made of rubber material containing self-crosslinking resin. The stress relaxation layer has a thickness in a range of from 5 to 50 &mgr;m, and stress not lower than 5 MPa at 10% stretch.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: February 17, 2004
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koji Yamaguchi, Yukio Ohyama, Tsutomu Saito, Naoaki Sasakibara
  • Roll
    Publication number: 20020160895
    Abstract: A roll has a base material layer, a front surface layer, and stress relaxation layer. The base material layer is made of low hardness rubber material and provided on an outer circumference of a metal core. The stress relaxation layer is provided on the base material layer and made of material which is at least higher in hardness than the base material layer and larger in stretch than the front surface layer. The front surface layer is made of resin material and provided on the stress relaxation layer. The stress relaxation layer is made of rubber material containing self-crosslinking resin. The stress relaxation layer has a thickness in a range of from 5 to 50 &mgr;m, and stress not lower than 5 MPa at 10% stretch.
    Type: Application
    Filed: March 7, 2002
    Publication date: October 31, 2002
    Applicant: Tokai Rubber Industries, Ltd.
    Inventors: Koji Yamaguchi, Yukio Ohyama, Tsutomu Saito, Naoaki Sasakibara
  • Method for making a composite aluminum article
    Patent number: 5439712
    Abstract: A method for making a composite aluminum article comprises the steps of electrochemically or chemically adsorbing fine particles of a polytetrafluoroethylene to the surface of a hard anodic oxide film of an aluminum material or an aluminum alloy material, and drying the aluminum material or the aluminum alloy material. Thereafter, the aluminum material or the aluminum alloy material and an opposite member which slides along the aluminum material or the aluminum alloy material are rubbed together, and a lubricating film is thereby formed.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: August 8, 1995
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Okuno Chemical Industries Co., Ltd.
    Inventors: Takeshi Hattori, Kazuhiko Inogutt, Yukio Ohyama, Yutaka Nakagishi, Masaaki Sakaguchi
  • Method for making a composite aluminum article
    Patent number: 5419970
    Abstract: A method for making a composite aluminum article comprises the steps of electrochemically or chemically adsorbing fine particles of a polytetrafluoroethylene to the surface of a hard anodic oxide film of an aluminum material or an aluminum alloy material, and drying the aluminum material or the aluminum alloy material. Thereafter, the aluminum material or the aluminum alloy material and an opposite member which slides along the aluminum material or the aluminum alloy material are rubbed together, and a lubricating film is thereby formed.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: May 30, 1995
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Okuno Chemical Industries Co., Ltd.
    Inventors: Takeshi Hattori, Kazuhiko Inoguti, Yukio Ohyama, Yutaka Nakagishi, Masaaki Sakaguchi