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:
Aug. 27, 1991
Filed:
Sep. 26, 1989
Applicant:
Inventors:
Assignee:
Mitsubishi Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07L / ;
U.S. Cl.
CPC ...
585 20 ; 585 21 ; 252-9 ; 252 73 ;
Abstract
A lubricating oil is disclosed, which mainly is composed of a naphthenic hydrocarbon having 19 carbon atoms comprising two cyclohexane rings which have methyl-substitution at the 1, 2 and 4 positions thereof, the two cyclohexane rings being linked by a methylene group.