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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.:

US 11021673 B1

PDFFull Text
Date of Patent:
Jun. 01, 2021

Filed:

Nov. 16, 2017

Lubricant composition

Applicant:

Shell Oil Company, Houston, TX (US);

Inventors:

Mao Ueda, Aikoi-Gun, JP;

Kiyoshi Hanyuda, Aikoi-Gun, JP;

Assignee:

Shell Oil Company, Houston, TX (US);

Attorney:
Primary Examiner:

Pamela H Weiss

Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 30/12 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01); C10M 171/02 (2006.01); C10M 145/14 (2006.01);
U.S. Cl.
CPC ...
C10M 169/048 (2013.01); C10M 169/041 (2013.01); C10M 169/044 (2013.01); C10M 2205/173 (2013.01); C10M 2209/084 (2013.01); C10M 2229/041 (2013.01); C10N 2030/02 (2013.01); C10N 2030/06 (2013.01); C10N 2030/12 (2013.01); C10N 2030/43 (2020.05); C10N 2030/45 (2020.05); C10N 2030/54 (2020.05); C10N 2030/68 (2020.05); C10N 2040/25 (2013.01);
Abstract

The invention provides a lubricating oil composition being a lubricating oil composition containing a base oil composition which includes a lubricant base oil belonging to Group 3 of the base oil categories specified by the American Petroleum Institute (API) and a comb-like polymethacrylate-based viscosity index improver wherein the weight-halving temperature is not less than 310° C., and the sulphur content in the aforementioned lubricating oil composition is not more than 0.3 weight % in terms of the total weight of the aforementioned lubricating oil composition, and the aforementioned lubricating oil composition has an SAE viscosity grade of 0W-20, 5W-20 or 5W-30, a viscosity index of not less than 185 and a high-temperature high-shear viscosity at 100° C. of not more than 7.5 mPa·s.

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Ueda, Mao. (2021). Lubricant composition (U.S. Patent No. 11021673). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11021673

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