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. 07, 2015
Filed:
Apr. 21, 2010
Applicants:
Craig D. Tipton, Perry, OH (US);
Charla A. Ramsey, Concord Township, OH (US);
Daniel J. Knapton, Willowick, OH (US);
Paul E. Adams, Kirtland, OH (US);
Inventors:
Craig D. Tipton, Perry, OH (US);
Charla A. Ramsey, Concord Township, OH (US);
Daniel J. Knapton, Willowick, OH (US);
Paul E. Adams, Kirtland, OH (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 159/12 (2006.01); C10M 153/00 (2006.01); C10M 137/12 (2006.01);
U.S. Cl.
CPC ...
C10M 137/12 (2013.01); C10M 159/123 (2013.01); C10M 153/00 (2013.01); C10M 2225/00 (2013.01); C10N 2230/06 (2013.01); C10N 2230/36 (2013.01); C10N 2240/04 (2013.01); C10N 2240/042 (2013.01);
Abstract
A lubricant composition of an oil of lubricating viscosity and a polymeric phosphorus ester comprising the condensation product of a monomeric phosphorus acid or an ester thereof with a diol having two hydroxy groups separated by a chain of 4 to about 100 atoms exhibits good volatility, corrosion, wear, and/or seal performance in lubrication of a transmission.