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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 10233569 B1

PDFFull Text
Date of Patent:
Mar. 19, 2019

Filed:

Feb. 05, 2018

Carbon-fiber-precursor fiber bundle, carbon fiber bundle, and uses thereof

Applicant:

Mitsubishi Chemical Corporation, Tokyo, JP;

Inventors:

Yuusuke Shinmen, Tokyo, JP;

Norifumi Hirota, Tokyo, JP;

Takeshi Nii, Tokyo, JP;

Assignee:

MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L L P

Primary Examiner:

Camie S Thompson

Int. Cl.
CPC ...
D01F 9/12 (2006.01); F27D 7/00 (2006.01); D01F 9/22 (2006.01); D01F 6/38 (2006.01); D01D 5/253 (2006.01); D01D 5/096 (2006.01); C08J 5/24 (2006.01); B29C 70/44 (2006.01); C08J 5/04 (2006.01); B32B 37/14 (2006.01);
U.S. Cl.
CPC ...
D01F 9/12 (2013.01); B29C 70/44 (2013.01); B32B 37/14 (2013.01); C08J 5/042 (2013.01); C08J 5/24 (2013.01); D01D 5/096 (2013.01); D01D 5/253 (2013.01); D01F 6/38 (2013.01); D01F 9/225 (2013.01); F27D 7/00 (2013.01); C08J 2363/00 (2013.01); Y10T 428/26 (2015.01); Y10T 428/298 (2015.01); Y10T 442/3089 (2015.04);
Abstract

A carbon fiber bundle, wherein an average single-fiber fineness is from 1.0 to 2.4 dtex and a roundness is from 0.7 to 0.9 in a shape of a cross-section perpendicular to a fiber axis of a single fiber; the roundness being determined with equation (1): roundness=4πS/L, where S is a cross-sectional area of the single fiber and L is a circumferential length of the single fiber, and S and L are obtained by observing, under an SEM, the cross-section of the single fiber perpendicular to the fiber axis of the single fiber and analyzing the obtained image.

Find Patent Forward Citations

Shinmen, Yuusuke. (2019). Carbon-fiber-precursor fiber bundle, carbon fiber bundle, and uses thereof (U.S. Patent No. 10233569). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10233569

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

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