logo

For the Inventor, By the Inventor

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.:

US 7569524 B1

PDFFull Text
Date of Patent:
Aug. 04, 2009

Filed:

Aug. 06, 2008

Process to make an ashless lubricating oil with high oxidation stability

Applicants:

William Loh, Petaluma, CA (US);

John M. Rosenbaum, Richmond, CA (US);

Nancy J. Bertrand, Lafayette, CA (US);

Patricia Lemay, Vallejo, CA (US);

Rawls Frazier, Petaluma, CA (US);

Mark E. Okazaki, Alameda, CA (US);

Inventors:

William Loh, Petaluma, CA (US);

John M. Rosenbaum, Richmond, CA (US);

Nancy J. Bertrand, Lafayette, CA (US);

Patricia LeMay, Vallejo, CA (US);

Rawls Frazier, Petaluma, CA (US);

Mark E. Okazaki, Alameda, CA (US);

Assignee:

Chevron U.S.A. Inc., San Ramon, CA (US);

Attorney:

Susan M. Abernathy

Primary Examiner:

Walter D Griffin

Assistant Examiner:

Frank C Campanell

Int. Cl.
CPC ...
C10G 71/00 (2006.01); C10M 159/00 (2006.01); C10M 165/00 (2006.01); C10M 167/00 (2006.01); C10M 169/00 (2006.01); C10M 171/00 (2006.01); C10L 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process for making an ashless hydraulic fluid or paper machine oil comprising a) hydroisomerization dewaxing, b) fractionating, c) selecting a fraction having a very high VI, and a high level of molecules with cycloparaffinic functionality, and d) blending the fraction with an ashless antioxidant. A process for making ashless paper machine oil, comprising:

Find Patent Forward Citations

Loh, William. (2009). Process to make an ashless lubricating oil with high oxidation stability (U.S. Patent No. 7569524). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7569524

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…