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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 12680046 B1

PDFFull Text
Date of Patent:
Jul. 14, 2026

Filed:

Feb. 10, 2022

Low friction coatings

Applicants:

John Crane Inc., Chicago, IL (US);

Uchicago Argonne Llc, Chicago, IL (US);

Inventors:

Anirudha V. Sumant, Plainfield, IL (US);

Kalyan C. Mutyala, Clarendon Hills, IL (US);

Jiao Yang, Chicago, IL (US);

Jorge Pacheco, Chicago, IL (US);

Klaus Meck, Chicago, IL (US);

Assignees:

JOHN CRANE INC., Chicago, IL (US);

UCHICAGO ARGONNE, LLC, Chicago, IL (US);

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Gilbert Y Lee

Int. Cl.
CPC ...
C10M 111/04 (2006.01); C04B 35/565 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C04B 41/48 (2006.01); C04B 41/50 (2006.01); C04B 41/83 (2006.01); C04B 41/87 (2006.01); C10M 103/02 (2006.01); C10M 103/06 (2006.01); C10M 107/44 (2006.01); C10M 177/00 (2006.01); F16J 15/3284 (2016.01); C10N 20/06 (2006.01); C10N 40/34 (2006.01); C10N 50/02 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10M 111/04 (2013.01); C04B 35/565 (2013.01); C04B 41/0072 (2013.01); C04B 41/4543 (2013.01); C04B 41/488 (2013.01); C04B 41/5001 (2013.01); C04B 41/5054 (2013.01); C04B 41/83 (2013.01); C04B 41/87 (2013.01); C10M 103/02 (2013.01); C10M 103/06 (2013.01); C10M 107/44 (2013.01); C10M 177/00 (2013.01); F16J 15/3284 (2013.01); C10M 2201/0413 (2013.01); C10M 2201/0663 (2013.01); C10M 2217/0403 (2013.01); C10N 2020/06 (2013.01); C10N 2040/34 (2013.01); C10N 2050/02 (2013.01); C10N 2070/00 (2013.01);
Abstract

A dry gas seal assembly for use with a rotating machine that includes a rotating shaft, the seal assembly comprises a seal face bears a solid coating comprising molybdenum disulfide, graphene oxide, and optionally polydopamine, preferably wherein the graphene oxide to molybdenum disulfide ratio is 8:10 to 10:8. A method for making a dry gas seal assembly comprises coating a homogeneous dispersion of graphene oxide and molybdenum disulfide on a seal face.

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