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. 06, 2015
Filed:
Feb. 18, 2011
Takayuki Kawamura, Mie, JP;
Takayuki Kawamura, Mie, JP;
NTN CORPORATION, Osaka, JP;
Abstract
The present invention provides a thickener which allows grease having an excellent durability in a high-temperature and high-speed condition to be produced, the grease containing the thickener, a method of producing the thickener and the grease, and a grease-packed bearing. A grease () to be packed in a bearing () is obtained by adding a thickener for a grease comprising a compound shown by a chemical formula (1) shown below or a compound shown by a chemical formula (2) shown below; In the chemical formula (1) or the chemical formula (2), Rshows a diamine residue or a diisocyanate residue; Rshows a residue of a dicarboxylic acid in which two adjacent carbon atoms form an imide ring or residues of derivative of the dicarboxylic acid; Rshows a tetracarboxylic acid residue or residues of derivatives of the tetracarboxylic acid; Rshows a hydrogen atom residue, a monoamine residue or a monoisocyanate residue; and n indicates integers of 0 through 5.