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:
Dec. 02, 2014
Filed:
Mar. 31, 2010
Kenneth D. Nelson, Napa, CA (US);
Elaine S. Yamaguchi, El Cerrito, CA (US);
Kam-sik NG, San Lorenzo, CA (US);
Paula S. Rogers, Pinole, CA (US);
Kenneth D. Nelson, Napa, CA (US);
Elaine S. Yamaguchi, El Cerrito, CA (US);
Kam-Sik Ng, San Lorenzo, CA (US);
Paula S. Rogers, Pinole, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Abstract
Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents of the general formula Si—Xor a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.
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