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. 14, 2025
Filed:
Dec. 28, 2021
Applicant:
Idemitsu Kosan Co.,ltd., Tokyo, JP;
Inventors:
Assignee:
IDEMITSU KOSAN CO.,LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C10M 145/14 (2006.01); C08F 220/18 (2006.01); C08F 220/20 (2006.01); C08F 230/02 (2006.01); C10M 153/02 (2006.01); C10M 169/04 (2006.01); C10N 20/04 (2006.01); C10N 30/06 (2006.01); C10N 30/08 (2006.01); C10N 40/02 (2006.01);
U.S. Cl.
CPC ...
C10M 145/14 (2013.01); C08F 220/1812 (2020.02); C08F 220/20 (2013.01); C08F 230/02 (2013.01); C10M 153/02 (2013.01); C10M 169/04 (2013.01); C10M 2209/084 (2013.01); C10M 2225/02 (2013.01); C10N 2020/04 (2013.01); C10N 2030/06 (2013.01); C10N 2030/08 (2013.01); C10N 2040/02 (2013.01);
Abstract
A lubricating oil additive composition that is suitable as a load bearing additive, and is excellent in wear resistance, extreme pressure property, and thermal stability, and a lubricating oil composition containing the lubricating oil additive composition. A lubricating oil additive composition containing a poly(meth)acrylate-based copolymer (X) containing a structural unit (a) derived from a particular alkyl (meth)acrylate (A), a structural unit (b) derived from a particular hydroxy group containing (meth)acrylate (B), and a structural unit (c) derived from a particular phosphorus-containing (meth)acrylate (C).