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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 12447459 B1

PDFFull Text
Date of Patent:
Oct. 21, 2025

Filed:

Jul. 06, 2022

Polymer-monolith pre-oxidation to improve shape retention during subsequent heat treatment, and monolith produced

Applicant:

Advanced Fuel Research, Inc., East Hartford, CT (US);

Inventors:

Joseph E. Cosgrove, Columbia, CT (US);

Michael A. Serio, Sturbridge, MA (US);

Marek A. Wójtowicz, Manchester, CT (US);

Andrew E. Carlson, Higganum, CT (US);

Assignee:

ADVANCED FUEL RESEARCH, INC.;

Attorney:

Irving M. Fishman

Primary Examiner:

Stuart L Hendrickson

Int. Cl.
CPC ...
B01J 20/20 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01);
U.S. Cl.
CPC ...
B01J 20/20 (2013.01); B01J 20/28045 (2013.01); B01J 20/3078 (2013.01); B01J 2220/4812 (2013.01); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12);
Abstract

High purity carbon sorbent monoliths, particularly effective for the removal of trace-contaminants such as ammonia, formaldehyde, and methyl mercaptan from a gas flow, are fabricated by 3D-printing polymer monoliths, pre-oxidizing them in a flow of air at a temperature below the melting point of the polymer precursor, carbonizing them, and subsequently activating them to a weight loss of about 20 percent. The pre-oxidation step effectively prevents polymer-monolith swelling and melting during carbonization.

Find Patent Forward Citations

Cosgrove, Joseph. (2025). Polymer-monolith pre-oxidation to improve shape retention during subsequent heat treatment, and monolith produced (U.S. Patent No. 12447459). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12447459

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