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:
May. 03, 2022
Filed:
Mar. 30, 2018
Applicant:
The Boeing Company, Chicago, IL (US);
Inventors:
Gang Sui, Beijing, CN;
Xiaoping Yang, Beijing, CN;
Xin Jin, Beijing, CN;
Zhu Ming, Beijing, CN;
Zhandong Wang, Beijing, CN;
Assignee:
The Boeing Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 9/12 (2006.01); C10B 57/06 (2006.01); C01B 32/05 (2017.01); C10B 53/07 (2006.01); B29B 17/04 (2006.01);
U.S. Cl.
CPC ...
C10B 57/06 (2013.01); B29B 17/04 (2013.01); C01B 32/05 (2017.08); C10B 53/07 (2013.01); D01F 9/12 (2013.01); B29B 2017/0496 (2013.01);
Abstract
A method for recovering carbon fibers from composite material waste includes coating a solid acid powder onto a surface of a composite material waste having carbon fibers and a resin matrix, pyrolyzing the resin matrix of the coated composite material waste in an inert environment, and oxidizing the pyrolyzed resin of the composite material waste in an air environment.