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:
Jul. 30, 2019
Filed:
Oct. 27, 2015
Applicant:
Infineum International Limited, Abingdon, GB;
Inventors:
Tushar K. Bera, Fulshear, TX (US);
Rachel Tundel, Brooklyn, NY (US);
Laura Gregory, Marlborough, GB;
Peter M. Wright, Mountainside, NJ (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 161/00 (2006.01);
U.S. Cl.
CPC ...
C10M 161/00 (2013.01); C10M 2203/1025 (2013.01); C10M 2205/0285 (2013.01); C10M 2207/129 (2013.01); C10M 2207/262 (2013.01); C10M 2223/045 (2013.01); C10N 2210/02 (2013.01); C10N 2220/021 (2013.01); C10N 2230/04 (2013.01); C10N 2230/52 (2013.01); C10N 2230/54 (2013.01); C10N 2240/102 (2013.01); C10N 2270/02 (2013.01);
Abstract
A trunk piston marine engine lubricant comprises in respective minor amounts (A) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent system, and (B) a hydrocarbyl-substituted succinic acid anhydride made by halogen- or radical-assisted functionalization processes, where the ratio of succinic anhydride to hydrocarbyl chains is in the range of 1.4 to 4. The lubricant, when used to lubricate such an engine fuelled by heavy fuel oil, exhibits improved control of asphaltene precipitation and deposition on engine surfaces.