Patents by Inventor Shiro Miyamori

Shiro Miyamori 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).

  • Patent number: 6918866
    Abstract: An electrically conductive roll includes a shaft body and at least a conductive elastic layer formed by extrusion on an outer circumferential surface of the shaft body. The conductive elastic layer is formed from at least one conductive rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds and a melting point in a range from 40° C. to 100° C., and at least one conductive agent. The thermoplastic resin is included in an amount of 5 to 50 wt. % of a total amount of the rubber material and the thermoplastic resin.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: July 19, 2005
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Shiro Miyamori, Yasuyuki Hayasaki, Masanari Umeda, Kenichi Tsuchiya
  • Publication number: 20050138810
    Abstract: A method of producing an electrically conductive roll having a proper crown shape at lower costs through a smaller number of process steps and without polishing. In this production method, a crown-shaped rubber layer is formed unitarily on a metal core by variably controlling the amount of a rubber material adhering on the metal core along the length of the metal core during extrusion of the rubber material.
    Type: Application
    Filed: February 16, 2005
    Publication date: June 30, 2005
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Shiro Miyamori, Yasuyuki Hayasaki, Masanari Umeda
  • Publication number: 20040082451
    Abstract: A method of producing an electrically conductive roll having a proper crown shape at lower costs through a smaller number of process steps and without polishing. In this production method, a crown-shaped rubber layer is formed unitarily on a metal core by variably controlling the amount of a rubber material adhering on the metal core along the length of the metal core during extrusion of the rubber material.
    Type: Application
    Filed: October 23, 2003
    Publication date: April 29, 2004
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Shiro Miyamori, Yasuyuki Hayasaki, Masanari Umeda
  • Publication number: 20040062940
    Abstract: An electrically conductive roll which includes a shaft body and which includes at least a conductive elastic layer formed by extrusion on an outer circumferential surface of the shaft body, wherein the conductive elastic layer is formed of at least one conductive rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds and a melting point in a range from 40° C. to 100° C., and at least one conductive agent, the thermoplastic resin being included in an amount of 5 to 50 wt. % of a total amount of the rubber material and the thermoplastic resin.
    Type: Application
    Filed: August 4, 2003
    Publication date: April 1, 2004
    Applicant: Tokai Rubber Industries, Ltd.
    Inventors: Shiro Miyamori, Yasuyuki Hayasaki, Masanari Umeda, Kenichi Tsuchiya
  • Patent number: 6002911
    Abstract: A cleaning blade (11) is formed of a cured urethane composition of a polyisocyanate and a polyol. The cured composition has a crosslinking density of 8.5.times.10.sup.-4 to 11.0.times.10.sup.-4 mol/cm.sup.3 and a tan .delta. peak temperature of not greater than 10.degree. C.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: December 14, 1999
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Satoshi Suzuki, Yasuhito Suzuki, Akihiro Maeda, Kazuhide Tsuda, Shiro Miyamori