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. 23, 2021
Filed:
Aug. 16, 2018
Applicant:
The Lubrizol Corporation, Wickliffe, OH (US);
Inventors:
Sona Sivakova, Painesville, OH (US);
David M. Nickerson, Concord Township, OH (US);
Paul Simon O'Hora, Belper, GB;
William R. S. Barton, Belper, GB;
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 149/04 (2006.01); C10M 149/10 (2006.01); C10N 20/00 (2006.01); C10N 40/04 (2006.01); C10N 60/00 (2006.01); C10N 30/00 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 30/06 (2006.01);
U.S. Cl.
CPC ...
C10M 169/044 (2013.01); C10M 149/04 (2013.01); C10M 149/10 (2013.01); C10M 2205/022 (2013.01); C10M 2205/024 (2013.01); C10M 2209/06 (2013.01); C10M 2215/04 (2013.01); C10M 2215/06 (2013.01); C10M 2215/226 (2013.01); C10M 2223/00 (2013.01); C10N 2020/02 (2013.01); C10N 2020/04 (2013.01); C10N 2020/071 (2020.05); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/06 (2013.01); C10N 2030/43 (2020.05); C10N 2030/45 (2020.05); C10N 2040/042 (2020.05); C10N 2040/044 (2020.05); C10N 2060/09 (2020.05);
Abstract
A lubricant composition of an oil of lubricating viscosity, a grafted copolymer viscosity modifier that is an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of about 1000 to about 10,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group, which exhibits good dispersancy and viscometric performance in a driveline device.