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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 12758923 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

Jul. 21, 2022

Methods for manufacturing hollow fiber carbon membranes

Applicant:

Dow Global Technologies Llc, Midland, MI (US);

Inventors:

Abhishek Roy, Freeport, TX (US);

Thomas C. Fitzgibbons, Freeport, TX (US);

Li Tang, Freeport, TX (US);

Surendar R. Venna, Freeport, TX (US);

Derrick W. Flick, Freeport, TX (US);

Nikki J. Montanez, Freeport, TX (US);

Hali J. Mccurry, Freeport, TX (US);

James B. Heard, Freeport, TX (US);

Barry B. Fish, Freeport, TX (US);

Assignee:

Dow Global Technologies LLC, Midland, MI (US);

Attorney:

Dinsmore & Shohl LLP

Primary Examiner:

Christopher P Jones

Int. Cl.
CPC ...
B01D 53/02 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 71/02 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0067 (2013.01); B01D 53/228 (2013.01); B01D 69/02 (2013.01); B01D 69/088 (2013.01); B01D 71/021 (2013.01); B01D 2256/16 (2013.01); B01D 2256/22 (2013.01); B01D 2256/24 (2013.01); B01D 2257/102 (2013.01); B01D 2257/7022 (2013.01); B01D 2323/081 (2022.08); B01D 2323/60 (2022.08); B01D 2325/023 (2013.01);
Abstract

A method of manufacturing a hollow fiber carbon membrane, the method includes heating a polymeric precursor to a pyrolysis temperature that is greater than or equal to 900° C. and less than or equal to 1200° C., and pyrolyzing the polymeric precursor at the pyrolysis temperature in a pyrolysis atmosphere that comprises oxygen in an amount that is greater than 0 ppm and less than 200 ppm.

Find Patent Forward Citations

Roy, Abhishek. (2026). Methods for manufacturing hollow fiber carbon membranes (U.S. Patent No. 12758923). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12758923

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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