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:
Apr. 26, 2011
Filed:
Jun. 04, 2008
Applicants:
Allan G. Hee, Albany, CA (US);
Trevor Miller, Oakland, CA (US);
Inventors:
Allan G. Hee, Albany, CA (US);
Trevor Miller, Oakland, CA (US);
Assignee:
Chevron U.S.A., Inc., San Ramon, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10G 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gear oil composition is provided. The composition comprises a synergistic amount of an isomerized base oil having consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M for the gear oil composition to have a traction coefficient at 15 mm/s. of less than 0.030 and a pressure viscosity coefficient of at least 15.0 at 80° C., 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the sufficient amount of isomerized base oil ranges from 20 to 80 wt. % based on the total weight of the gear oil composition.