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:
Apr. 23, 1996
Filed:
May. 17, 1994
Applicant:
Inventor:
Kiyoshi Inoue, Yokohama, JP;
Assignee:
Nippon Oil Co., Ltd. Central Technical Research Laboratory, Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 427 ; 252 482 ;
Abstract
A lubricating oil additive comprising an alkaline earth metal salt of a sulfurized monoalkylcatechol as a main component represented by the following general formula (I): ##STR1## wherein Me represents an alkaline earth metal, R.sup.1 and R.sup.2 represent each an alkyl group having 14 to 30 carbon atoms, m is a number of from 1 to 2, which provides a lubricating oil additive excellent in anti-oxidant, friction-reducing and anti-abrasive properties at high temperature.