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.

Date of Patent:
May. 22, 2012

Filed:

Feb. 08, 2006
Applicants:

James L. Sumiejski, Mentor, OH (US);

Craig D. Tipton, Perry, OH (US);

Inventors:

James L. Sumiejski, Mentor, OH (US);

Craig D. Tipton, Perry, OH (US);

Assignee:

The Lubrizol Corporation, Wickliffe, OH (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 163/00 (2006.01); C10M 159/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a lubricating composition comprising (a) an oil of lubricating viscosity; (b) a friction modifier; (c) a corrosion inhibitor; (d) an antiwear agent; and (e) a product prepared by heating together: (i) a dispersant; (ii) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocarbyl-substituted 2,5-dimercapto-1,3,4-thiadiazole, or oligomers thereof; (iii) a borating agent;and (iv) optionally a dicarboxylic acid of an aromatic compound selected from the group consisting of 1,3 diacids and 1,4 diacids, or (v) optionally a phosphorus acid compound, said heating being sufficient to provide a product of (i), (ii), (iii) and optionally (iv), which is soluble in an oil of lubricating viscosity. The invention further provides a use for the lubricating composition in a transmission.


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Sumiejski, James. (2012). Lubricant additive formulation containing multifunctional dispersant (U.S. Patent No. 8183187). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8183187

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