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:
Sep. 06, 2011
Filed:
Mar. 18, 2005
Manabu Kobayashi, Toda, JP;
Katsuaki Ishida, Toda, JP;
Masayuki Saito, Toda, JP;
Hiroshi Yachi, Toda, JP;
Manabu Kobayashi, Toda, JP;
Katsuaki Ishida, Toda, JP;
Masayuki Saito, Toda, JP;
Hiroshi Yachi, Toda, JP;
Japan Energy Corporation, Tokyo, JP;
Abstract
This invention relates to lubricant base oil having high viscosity indexes and low pour points, and particularly to lubricant base oil consisting essentially of a normal paraffin and an isoparaffin, wherein (a) an average carbon number Nc in one molecule is not less than 28 but not more than 40, and (b) an average branch number Nb in one molecule calculated from a ratio of CHcarbon to total carbon determined byC-NMR analysis and the average carbon number Nc in one molecule is not more than (0.2Nc−3.1) but not less than 1.5.