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. 03, 1995
Filed:
Jun. 25, 1993
Applicant:
Inventors:
Francis J Slama, Montgomery, IL (US);
Paula R Vettel, Downers Grove, IL (US);
Assignee:
Ethyl Petroleum Additives, Inc., Richmond, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 / ; 252 496 ;
Abstract
Dispersancy and fluoroelastomer seal compatibility are achieved by use in the lubricant of a dispersing amount of a product made by reacting aminoguanidine or a basic salt thereof with a hydrocarbyl-substituted succinic acid or anhydride in a mole ratio of from about 0.4 to about 1.2 moles of the aminoguanidine or basic salt thereof per mole of the succinic acid or anhydride compound.