Patents by Inventor Kazushige Ohmura

Kazushige Ohmura 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).

  • Urea grease composition for constant velocity joints
    Patent number: 7897550
    Abstract: Urea grease composition for constant velocity joints is provided containing base oil, one or more urea thickener compounds, (A) one or more molybdenum sulphurized dialkyldithiocarbamates represented by general formula (I) wherein R1 and R2 are independently chosen from alkyl groups of from 1 to 24 carbons, m+n=4, m is from 0 to 3 and n is from 4 to 1, (B) triphenylphosphorothionate represented by formula (II) and (C) one or more stearic acid metal salts.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: March 1, 2011
    Assignee: Shell Oil Company
    Inventors: Yasushi Kawamura, Takumi Matsumoto, Kazuhiro Miyajima, Tetsuo Nimura, Kazushige Ohmura, Noriaki Shinoda, Keiji Tanaka, Takeo Yamamoto
  • Grease composition
    Patent number: 7629301
    Abstract: A grease composition is provided containing (a) a base oil; (b) a urea-based thickening agent; (c) at least one compound selected from the group of (i) a molybdenum dithiocarbamate, (ii) a zinc dithiocarbamate, (iii) a molybdenum dithiophosphate, and/or (iv) a zinc dithiophosphate; and (d) a metal salt of a fatty acid.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: December 8, 2009
    Assignee: Showa Shell Sekiyu K.K.
    Inventors: Kazushige Ohmura, Noriaki Shinoda, Keiji Tanaka
  • Urea grease composition for constant velocity joints
    Publication number: 20050020456
    Abstract: Urea grease composition for constant velocity joints is provided containing base oil, one or more urea thickener compounds, (A) one or more molybdenum sulphurized dialkyldithiocarbamates represented by general formula (I) wherein R1 and R2 are independently chosen from alkyl groups of from 1 to 24 carbons, m+n=4, m is from 0 to 3 and n is from 4 to 1, (B) triphenylphosphorothionate represented by formula (II) and (C) one or more stearic acid metal salts.
    Type: Application
    Filed: June 17, 2004
    Publication date: January 27, 2005
    Inventors: Yasushi Kawamura, Takumi Matsumoto, Kazuhiro Miyajima, Tetsuo Nimura, Kazushige Ohmura, Noriaki Shinoda, Keiji Tanaka, Takeo Yamamoto
  • Grease composition
    Publication number: 20050003970
    Abstract: A grease composition is provided containing (a) a base oil; (b) a urea-based thickening agent; (c) at least one compound selected from the group of (i) a molybdenum dithiocarbamate, (ii) a zinc dithiocarbamate, (iii) a molybdenum dithiophosphate, and/or (iv) a zinc dithiophosphate; and (d) a metal salt of a fatty acid.
    Type: Application
    Filed: June 17, 2004
    Publication date: January 6, 2005
    Inventors: Kazushige Ohmura, Noriaki Shinoda, Keiji Tanaka
  • Urea grease composition
    Publication number: 20040224859
    Abstract: A urea grease composition is provided containing a lubricating base oil and from 2 to 30 wt.
    Type: Application
    Filed: December 4, 2003
    Publication date: November 11, 2004
    Inventors: Kouichi Numazawa, Kazushige Ohmura, Takahiro Ozaki, Keiji Tanaka