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. 27, 2024
Filed:
Oct. 20, 2020
Applicant:
Shell Oil Company, Houston, TX (US);
Inventors:
Roger Francis Cracknell, London, GB;
Joseph Michael Russo, Houston, TX (US);
Allen Ambwere Aradi, Houston, TX (US);
Andreas Kolbeck, Hamburg, DE;
Assignee:
SHELL USA, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L 1/14 (2006.01); C10L 1/182 (2006.01); C10L 1/2387 (2006.01); C10L 10/14 (2006.01); F02M 25/022 (2006.01);
U.S. Cl.
CPC ...
C10L 1/143 (2013.01); C10L 1/182 (2013.01); C10L 1/2387 (2013.01); C10L 10/14 (2013.01); F02M 25/0228 (2013.01); C10L 2200/0423 (2013.01); C10L 2250/04 (2013.01); C10L 2270/023 (2013.01); C10L 2300/30 (2013.01);
Abstract
Method for reducing intake valve deposits in a spark ignition internal combustion engine which is fuelled with a gasoline fuel composition, wherein the method comprises introducing into the engine an aqueous based composition, wherein the aqueous based composition comprises (i) water, (ii) from 0 vol % to 40 vol % freezing point suppression agent, (iii) from 0 vol % to 10 vol % of surfactant, and (iv) an amine compound in a blending amount of from 0 ppmw to 1000 ppmw.