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. 03, 2012
Filed:
Dec. 09, 2008
Mark T. Devlin, Richmond, VA (US);
John T. Loper, Richmond, VA (US);
Roger M. Sheets, Pagosa Springs, CO (US);
Gregory H. Guinther, Richmond, VA (US);
Jeffrey M. Guevremont, Richmond, VA (US);
Mark T. Devlin, Richmond, VA (US);
John T. Loper, Richmond, VA (US);
Roger M. Sheets, Pagosa Springs, CO (US);
Gregory H. Guinther, Richmond, VA (US);
Jeffrey M. Guevremont, Richmond, VA (US);
Afton Chemical Corporation, Richmond, VA (US);
Abstract
Lubricated surfaces and lubricant compositions for lubricating a surface. The lubricated surface is provided by a lubricant composition including a base oil of lubricating viscosity, at least one metal salt of phosphorothioic acid, and an ashless, sulfur-free organophosphorus compound providing a metal to phosphorus weight ratio ranging from about 0.25:1 to about 1.0:1 by weight. The lubricant composition is substantially devoid of molybdenum.