Patents by Inventor Shigeyuki Sugimori

Shigeyuki Sugimori 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: 7867956
    Abstract: A urea-based lubricating grease composition comprising (a) as a thickener, a diurea compound which is an alkyldiurea compound having an average molecular weight in the range of from 600 to 700, wherein in the range of from 25 to 60 mole % of the total alkyl groups is an unsaturated component, and the total amine value of the primary amine constituting the raw material is in the range of from 250 to 350, (b) a base oil having as its main component one or more synthetic hydrocarbon oil(s) having a pour point of ?40° C. or below, wherein the kinematic viscosity of the base oil is 6000 mm2/sec or less at ?40° C., and (c) as additives, a mixture comprising an oil-soluble organic molybdenum complex, an oil-soluble organic zinc compound of dithiocarbamic acid, an oil-soluble organic zinc compound of dithiophosphoric acid and an inorganic sulphur compound; and a roller bearing and electric power steering device wherein the said lubricating grease composition is used as the lubricant.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: January 11, 2011
    Assignee: Shell Oil Company
    Inventors: Toshihiro Asakura, Yasushi Kawamura, Hirofumi Kuwabara, Takahiro Ozaki, Shigeyuki Sugimori, Keiji Tanaka
  • Patent number: 7786058
    Abstract: A rolling device employing a lubricating grease composition containing a thickener which is a mixture of (a) one or more diurea compounds made from one or more primary amines and a diisocyanate; (b) at least one fatty acid metal salt; (c) at least one amide compound selected from the group consisting of aliphatic amides and bisamides, where the proportions of (a), (b) and (c) satisfy the relationship: a/(b+c)=0.2?10 provided that (1) the proportion of ingredient (a) is 1-10, (2) the proportion of ingredient (b) is 0.5-2.5, and (3) the proportion of ingredient (c) is 0.5-2.5, and the amount of the thickener is 2 to 30% by weight, based on the lubricating grease composition; (d) a base oil which is a lube base oil having a pour point of ?36 to ?67.7° C. that includes a synthetic hydrocarbon oil as the main component; and (e) 1-7% by weight of an additive mixture containing an organomolybdenum complex, an organozinc compound of a dithiocarbamic acid, and an organozinc compound of dithiophosphoric acid.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 31, 2010
    Assignee: JTEKT Corporation
    Inventors: Hirofumi Kuwabara, Shigeyuki Sugimori, Toshihiro Asakura
  • Publication number: 20090065287
    Abstract: A rolling device is provided which employs a lubricating grease composition which considerably diminishes irregular friction fluctuations occurring on rolling/sliding friction surfaces, shows stable low-torque characteristics in a wide temperature range, can retain a sufficient oil film even at high temperatures, has along life, and contains a novel thickener. Also provided is an electric power steering apparatus employing the rolling device.
    Type: Application
    Filed: April 27, 2006
    Publication date: March 12, 2009
    Inventors: Hirofumi Kuwabara, Shigeyuki Sugimori, Toshihiro Asakura
  • Publication number: 20080161214
    Abstract: A urea-based lubricating grease composition comprising (a) as a thickener, a diurea compound which is an alkyldiurea compound having an average molecular weight in the range of from 600 to 700, wherein in the range of from 25 to 60 mole % of the total alkyl groups is an unsaturated component, and the total amine value of the primary amine constituting the raw material is in the range of from 250 to 350, (b) a base oil having as its main component one or more synthetic hydrocarbon oil(s) having a pour point of ?40° C. or below, wherein the kinematic viscosity of the base oil is 6000 mm2/sec or less at ?40° C., and (c) as additives, a mixture comprising an oil-soluble organic molybdenum complex, an oil-soluble organic zinc compound of dithiocarbamic acid, an oil-soluble organic zinc compound of dithiophosphoric acid and an inorganic sulphur compound; and a roller bearing and electric power steering device wherein the said lubricating grease composition is used as the lubricant.
    Type: Application
    Filed: December 23, 2005
    Publication date: July 3, 2008
    Applicant: SHELL OIL COMPANY
    Inventors: Toshihiro Asakura, Yasushi Kawamura, Hirofumi Kuwabara, Takahiro Ozaki, Shigeyuki Sugimori, Keiji Tanaka