Patents by Inventor Kouichi Nakazawa

Kouichi Nakazawa 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).

  • Grease composition for constant velocity joints
    Patent number: 6894009
    Abstract: A grease composition for constant velocity joints, having a base oil and a urea-based thickener, which grease additionally contains, (A) molybdenum sulphide dialkyldithiocarbamate and (B) 5,5-dithiobis (1,3,4-thiadiazole-2-thiol); a method of lubricating a constant velocity joint including packing it with grease and a constant velocity joint packed with said grease.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: May 17, 2005
    Assignee: Shell Oil Company
    Inventors: Yasushi Kawamura, Kouichi Nakazawa, Noriaki Shinoda, Keiji Tanaka, Tetsuo Nimura, Kouji Saitou, Tomoyasu Wada
  • Grease composition with improved rust prevention and abrasion resistance properties
    Patent number: 6800595
    Abstract: A grease composition having a base oil and a thickener, which grease additionally has from 0.05% to 30% by weight of sodium thiosulphate and at least 0.1% by weight of one or more additives selected from the group of: calcium salicylate, magnesium salicylate, calcium phenate, and calcium sulphonate, based on the total grease composition, and use of the grease composition to improve rust prevention and abrasion resistance. The invention also relates to a method for preparing the grease composition.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: October 5, 2004
    Assignee: Shell Oil Company
    Inventors: Takahiro Ozaki, Noriaki Shinoda, Kouichi Nakazawa
  • Grease composition with improved rust prevention and abrasion resistance properties
    Publication number: 20030176295
    Abstract: A grease composition comprising a base oil and a thickener, which grease additionally comprises from 0.05% to 30% by weight of sodium thiosulphate and at least 0.1% by weight of one or more additives (A) selected from the group comprising calcium salicylate, magnesium salicylate, calcium phenate and/or calcium sulphonate, based on the total grease composition; use of said grease composition to improve rust prevention and abrasion resistance, and a method for preparing said grease composition.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 18, 2003
    Inventors: Takahiro Ozaki, Noriaki Shinoda, Kouichi Nakazawa
  • Grease composition for constant velocity joints
    Publication number: 20030027728
    Abstract: Grease composition for constant velocity joints, comprising a base oil and a urea-based thickener, which grease additionally contains, (A) molybdenum sulphide dialkyldithiocarbamate and (B) 5,5-dithiobis(1,3,4-thiadiazole-2-thiol); a method of lubricating a constant velocity joint comprising packing it with said grease; and a constant velocity joint packed with said grease.
    Type: Application
    Filed: August 27, 2002
    Publication date: February 6, 2003
    Inventors: Yasushi Kawamura, Kouichi Nakazawa, Noriaki Shinoda, Keiji Tanaka, Tetsuo Nimura, Kouji Saitou, Tomoyasu Wada