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:
Jan. 31, 2017
Filed:
Dec. 09, 2008
Gilbert Robert Bernard Germaine, Petit Couronne, FR;
David John Wedlock, Chester, GB;
Alan Richard Wheatley, Chester, GB;
Gilbert Robert Bernard Germaine, Petit Couronne, FR;
David John Wedlock, Chester, GB;
Alan Richard Wheatley, Chester, GB;
SHELL OIL COMPANY, Houston, TX (US);
Abstract
A grease formulation containing a thickener and a Fischer-Tropsch derived base oil, in particular a heavy or extra heavy base oil. The use of a Fischer-Tropsch oil results in an increase in thickener concentration and in improved properties such as anti-wear and copper corrosion performance. Also provided is the use of a Fischer-Tropsch derived base oil in a grease formulation, for the purpose of improving its anti-wear and/or copper corrosion performance, and/or for reducing the concentration of an additive in the formulation.