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:
May. 13, 2014
Filed:
Apr. 27, 2012
Motoharu Akiyama, Kitasaku-gun, JP;
Yusuke Enomoto, Kitasaku-gun, JP;
Kenichiro Matsubara, Fujisawa, JP;
Motoharu Akiyama, Kitasaku-gun, JP;
Yusuke Enomoto, Kitasaku-gun, JP;
Kenichiro Matsubara, Fujisawa, JP;
Kyodo Yushi Co., Ltd., Kanagawa, JP;
Minebea Co., Ltd., Nagano, JP;
Abstract
The invention provides a grease composition having (A) a lithium soap thickener, (B) as a base oil an ester type synthetic oil obtainable from an esterification reaction of trimethylolpropane with a fatty acid, and (C) (c-1) a 1-naphthylamine type antioxidant and (c-2) a diphenylamine type antioxidant, wherein the contents of (c-1) and (c-2) are 1.0 to 10 mass % in total, based on the total mass of the composition, and the ratio by mass of (c-1) to (c-2) is in the range from 30:70 to 70:30.