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:
Nov. 10, 2015
Filed:
Feb. 28, 2011
Applicants:
Hiroshi Tsunekawa, Shizuoka, JP;
Takao Saeki, Shizuoka, JP;
Akio Yoshida, Shizuoka, JP;
Inventors:
Assignee:
TOHO TENAX CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D02G 3/02 (2006.01); D02G 3/16 (2006.01); D06M 15/59 (2006.01); B29B 9/14 (2006.01); D02G 3/26 (2006.01); D06M 101/40 (2006.01); B29C 47/00 (2006.01); B29K 105/12 (2006.01); C08K 9/08 (2006.01); C08K 7/06 (2006.01); C08L 77/00 (2006.01); B29B 9/06 (2006.01);
U.S. Cl.
CPC ...
D02G 3/16 (2013.01); B29B 9/14 (2013.01); D06M 15/59 (2013.01); B29B 9/06 (2013.01); B29C 47/0011 (2013.01); B29K 2105/12 (2013.01); C08K 7/06 (2013.01); C08K 9/08 (2013.01); C08L 77/00 (2013.01); D02G 3/26 (2013.01); D06M 2101/40 (2013.01); D10B 2101/12 (2013.01); Y10T 428/1334 (2015.01); Y10T 428/2918 (2015.01);
Abstract
Disclosed is a carbon-fiber chopped strand, and a manufacturing method of the same. The carbon-fiber chopped strand is composed of single filaments composed of 30,000-120,000 carbon fibers, and a sizing agent content 1-10% by weight that bundles the single filaments; the ratio of maximum diameter (Dmax) in the cross section and minimum diameter (Dmin) is 1.0-1.8, a length along a fiber direction is 3-10 mm, and a repose angle of 10-30°.