Patents by Inventor Shigeru Murakami

Shigeru Murakami 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).

  • Novel polyester polymers
    Patent number: 4749775
    Abstract: Polyester polymers consisting essentially of repeating units having the formula ##STR1## repeating units having the formula--O--Ar.sup.1 --CO-- [II],repeating units having the formula--O--Ar.sup.2 --O-- [III],and repeating units having the formula ##STR2## wherein Ar.sup.1 is selected from ##STR3## Ar.sup.2 is selected from ##STR4## halogen substituted radicals of these radicals, and ##STR5## wherein X is selected from --O--, --S--, --SO.sub.2 --, --CO--, --O(CH.sub.2).sub.n O--.--CH.sub.2).sub.n, and ##STR6## wherein each n independently represents a member having a value of from 1 to 10, and each R.sup.4 is independently selected from alkyl radicals of 1 to 5 carbon atoms, andR.sup.2 and R.sup.3 are independently selected from hydrogen atom, halogen radicals, alkyl radicals of 1 to 5 carbon atoms, and phenyl radical, and R.sup.2 and R.sup.3 may be identical or different from each other, andR.sup.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: June 7, 1988
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tetsuro Takeya, Tatsuya Tomioka, Shigeru Murakami, Kenkichi Takahashi
  • Method for producing a carbon sheet and a fuel cell separator
    Patent number: 4737421
    Abstract: The present invention relates to a method for producing a carbon sheet by baking and aims to produce a warpage-free carbon sheet having a high electric conductivity. The present invention is characterized by forming sheets comprising fibrous cellulose, thermosetting resin, and graphite powder and laminating the sheets, into which thermosetting resin is impregnated.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: April 12, 1988
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Takeo Uemura, Shigeru Murakami
  • Method for producing a carbon sheet and a fuel cell separator
    Patent number: 4627944
    Abstract: A carbon sheet which is suitable for use as a fuel cell separator is produced by the steps of:forming a shaped body in the form of a sheet comprising cellulose fibers and a thermosetting resin which is filled between the cellulose fibers; curing the thermosetting resin of the shaped body; and baking the shaped body.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: December 9, 1986
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Shigeru Murakami, Yasuto Komatsu, Makoto Watanabe, Takeo Uemura
  • Sheet-like articles of polyvinyl chloride
    Patent number: 4402887
    Abstract: A sheet-like article of polyvinyl chloride which is obtained by calendering a composition comprising polyvinyl chloride, a reactive plasticizer, a photosensitizer, a stabilizer and a polymerization inhibitor, and then irradiating the product with ultraviolet rays.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: September 6, 1983
    Assignee: Dainippon Ink and Chemicals Inc.
    Inventors: Kazuya Kuriyama, Shigeru Murakami, Ryozo Sugawara, Kiyoshi Honda
  • Embossed interior finishing materials having excellent cigarette mark resistance
    Patent number: 4278728
    Abstract: An embossed interior finishing material having superior cigarette mark resistance, said material comprising(A) a base material(B) formed on said base material, a foamed and ultraviolet-cured undercoat layer obtained from a vinyl chloride polymer, a reactive plasticizer, a blowing agent and a light sensitizer, and(C) formed on said undercoat layer, an ultraviolet-cured top coat layer obtained from a vinyl chloride polymer, a reactive plasticizer and a light sensitizer, or(C') formed on said undercoat layer, an ultraviolet-cured top paint layer.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: July 14, 1981
    Assignee: Dainippon Ink & Chemicals, Inc.
    Inventors: Kiyoshi Honda, Kazuya Kuriyama, Shigeru Murakami, Ryozo Sugawara, Chiaki Nakamura