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:
Nov. 19, 2013
Filed:
Aug. 26, 2009
Stephen Joseph Miller, San Francisco, CA (US);
Saleh A. Elomari, Fairfield, CA (US);
Zhen Zhou, Emeryville, CA (US);
Stephen Joseph Miller, San Francisco, CA (US);
Saleh A. Elomari, Fairfield, CA (US);
Zhen Zhou, Emeryville, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
The present invention is generally directed to the present invention provides for multi-grade engine oil formulations comprising a diester component, wherein the diester component comprises vicinal diester species, and wherein at least a portion of said diester component is bio-derived. Many such formulations of the present invention are expected to favorably compete with similar, existing formulations comprising synthetic esters, but such formulations are generally expected to meet or exceed such existing formulations in a number of areas including, but not limited to, economics, biodegradability, and/or toxicity.