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:
Jul. 12, 2022
Filed:
Jul. 17, 2017
The Lubrizol Corporation, Wickliffe, OH (US);
William R. S. Barton, Belper, GB;
Daniel J. Saccomando, Sheffield, GB;
Jamal Kassir, Dearborn, MI (US);
Paul E. Adams, Willoughby, OH (US);
Lisa Blanazs, Mannheim, DE;
Michael R. Sutton, Matlock, GB;
Stephen J. Cook, Belper, GB;
Paul R. Vincent, Belper, GB;
Ewan E. Delbridge, Concord Township, OH (US);
Yanshi Zhang, Solon, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
A lubricant composition comprising an oil of lubricating viscosity and 0.01 to 5 percent by weight of a substantially sulfur-free alkyl phosphate amine salt, where at least 30 mole percent of the phosphorus atoms are in an alkyl pyrophosphate salt structure, exhibits good antiwear performance. In the phosphate amine salt, at least 80 mole percent of the alkyl groups are typically secondary alkyl groups of 3 to 12 carbon atoms.