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:
Feb. 12, 2002
Filed:
Jul. 21, 1999
Applicant:
Inventors:
Assignee:
Unilever Patent Holdings B.V., Vlaardingen, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01M / ;
U.S. Cl.
CPC ...
C01M / ;
Abstract
An ester based lubricant, particularly suitable for 4-stroke engines comprises at least one ester of a saturated, branched chain monohydric alcohol having at least 8 carbon atoms and a saturated branched chain aliphatic monocarboxylic acid having at least 10 carbon atoms. The esters have a kinematic viscosity of at most 35 cSt (40° C.), a non-polarity index of at least 100, a Noack evaporation loss of at most 10% and a pour point below −30° C.