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. 31, 2000
Filed:
Nov. 08, 1999
Applicant:
Inventor:
Katsuya Koganei, Ohi-machi, JP;
Assignee:
Tonen Corporation, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
508591 ; 508110 ; 208 18 ; 208 19 ; 585-1 ;
Abstract
This invention provides a lubricant oil composition for internal combustion engines which shows a sufficiently low volatility at high temperature and good low-temperature viscosity characteristics. The lubricant oil composition for internal combustion engines comprises a base oil which simultaneously satisfies the following relationships (a.sub.1) and (b.sub.1):