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, 2025
Filed:
Sep. 03, 2024
Applicant:
Afton Chemical Corporation, Richmond, VA (US);
Inventors:
Leah Donham, Henrico, VA (US);
Abaigeal Ritzenthaler, Richmond, VA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 137/10 (2006.01); C10M 113/02 (2006.01); C10M 169/04 (2006.01); C10N 10/04 (2006.01); C10N 20/02 (2006.01); C10N 30/00 (2006.01); C10N 30/06 (2006.01); C10N 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 137/10 (2013.01); C10M 113/02 (2013.01); C10M 169/04 (2013.01); C10M 2201/041 (2013.01); C10M 2223/045 (2013.01); C10N 2010/04 (2013.01); C10N 2020/02 (2013.01); C10N 2030/06 (2013.01); C10N 2030/40 (2020.05); C10N 2040/252 (2020.05);
Abstract
The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for medium and/or heavy duty diesel engines having low levels of phosphorus and/or zinc but still achieving good valve train wear by including an antiwear system provided from overbased zinc dihydrocarbyl dithiophosphates having a selected average degree of branching and a certain percent of hydrocarbyl groups derived from secondary alcohols.