The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Oct. 26, 2006
Tetsuhiro Miyamoto, Kitaibaraki, JP;
Akihiko Shimura, Kitaibaraki, JP;
Tetsuhiro Kitahara, Kitaibaraki, JP;
Jiro Yurimoto, Kitaibaraki, JP;
Tetsuhiro Miyamoto, Kitaibaraki, JP;
Akihiko Shimura, Kitaibaraki, JP;
Tetsuhiro Kitahara, Kitaibaraki, JP;
Jiro Yurimoto, Kitaibaraki, JP;
NOK Kluber Co., Ltd., Tokyo, JP;
Abstract
A grease composition, which comprises (A) a perfluoropolyether base oil, (B) a thickener, and (C) barium sulfate and/or antimony oxide, where 0.1-50% by weight of the component (B) and 1-25% by weight of the component (C) are contained, has a distinguished effect on improvements of abrasion resistance, friction characteristics, load durability, high-temperature durability and corrosion resistance without any deterioration of heat resistance by adding at least one of barium sulfate and antimony oxide, each having an average primary particle size of 0.1-20 μm, as component (C).