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:
May. 08, 1979
Filed:
Dec. 23, 1977
Applicant:
Inventor:
John J Jaruzelski, Westfield, NJ (US);
Assignee:
Exxon Research & Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 466 ; 2524 / ; 260137 ; 260934 ;
Abstract
Highly effective antioxidants that are particularly useful in crankcase lubricating oil formulations of relatively low ash content are prepared by the condensation of phosphorodithioates of alkyl phenol sulfides with compounds having activated double bonds, particularly with styrene, alkyl styrenes, highly reactive olefins, vinyl esters and acrylate esters.