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. 16, 2019
Filed:
Mar. 04, 2015
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
Toray Industries, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 9/22 (2006.01); C01B 32/18 (2017.01); D01D 5/247 (2006.01);
U.S. Cl.
CPC ...
D01F 9/225 (2013.01); C01B 32/18 (2017.08); D01D 5/247 (2013.01); D01F 9/22 (2013.01); D10B 2401/00 (2013.01); D10B 2401/061 (2013.01); D10B 2401/062 (2013.01);
Abstract
Carbon fibers achieve a high elongation percentage and a high tensile modulus of resin-impregnated strands while being lightweight. The carbon fibers are configured such that: the void content in a cross section of the fibers in the axial direction, the cross section including the long axis of a cross section of the fibers in the radial direction, is at least 0.3% by area, but not more than 5.0% by area; the average aspect ratio of the voids is at least 2.0, but not more than 50; and the average width of the voids in the cross section of the fibers in the radial direction is at least 3 nm, but not more than 100 nm.