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. 25, 2008
Filed:
Dec. 20, 2005
Applicant:
Stephen H. Roby, Hercules, CA (US);
Inventor:
Stephen H. Roby, Hercules, CA (US);
Assignee:
Chevron Oronite Company LLC, San Ramon, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/56 (2006.01); G01M 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is described to determine the valve train wear performance of a lubricating oil by adding to the lubricating oil from about 2% to about 9% by weight, based on the total weight of the lubricating oil, of a mixture of at least three carbon black components of mixed particle size and measuring the wear induced in a wear test.