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. 03, 1984
Filed:
Feb. 19, 1982
Applicant:
Inventors:
Jackson C Chen, Troy, MI (US);
Marguerite S Baylerian, Huntington Woods, MI (US);
Bryan T Davis, West Bloomfield, MI (US);
Ellis B Rifkin, Southfield, MI (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 / ;
Abstract
A lubricating oil dispersant is made by grafting an alkyl methacrylate or acrylate and maleic anhydride onto a Bright Stock mineral oil backbone using a free radical generating catalyst and then reacting the product with an amine to form amide or imide groups.