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:
Apr. 12, 2022
Filed:
Aug. 21, 2019
Applicant:
Hexcel Corporation, Dublin, CA (US);
Inventors:
Peter Andrew Ferrin, South Jordan, UT (US);
Devon Cadwaladar Todd Thomas, Sandy, UT (US);
Assignee:
HEXCEL CORPORATION, Dublin, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 9/22 (2006.01); C01B 32/05 (2017.01); D01F 9/32 (2006.01);
U.S. Cl.
CPC ...
D01F 9/22 (2013.01); C01B 32/05 (2017.08); D01F 9/328 (2013.01);
Abstract
A method for making carbon fiber in which the tensile strength of carbon fiber is increased without dehumidifying the ambient air that enters every oxidation oven in a multiple oxidation oven system. A positive effect on tensile strength is provided when ambient air entering only the first oven in a series of oxidation ovens is dehumidified. In addition, the ambient air entering the last oven is not dehumidified when one or more of the preceding oxidation ovens is operated with dehumidified air.