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:
Sep. 30, 2014
Filed:
Nov. 28, 2011
Applicants:
Tomoko Ichikawa, Iyo-gun, JP;
Takashi Ochi, Otsu, JP;
Akira Kishiro, Mishima, JP;
Yasutaka Kato, Mishima, JP;
Takashi Shibata, Iyo-gun, JP;
Masafumi Ise, Iyo-gun, JP;
Inventors:
Tomoko Ichikawa, Iyo-gun, JP;
Takashi Ochi, Otsu, JP;
Akira Kishiro, Mishima, JP;
Yasutaka Kato, Mishima, JP;
Takashi Shibata, Iyo-gun, JP;
Masafumi Ise, Iyo-gun, JP;
Assignee:
Toray Industries, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02J 1/22 (2006.01); D01D 10/00 (2006.01); D01D 5/16 (2006.01); D01F 6/18 (2006.01); D01F 9/22 (2006.01); D01D 10/02 (2006.01);
U.S. Cl.
CPC ...
D01D 10/00 (2013.01); D02J 1/228 (2013.01); D01D 5/16 (2013.01); D01F 6/18 (2013.01); D01F 9/22 (2013.01); D01D 10/02 (2013.01);
Abstract
A method of manufacturing a polyacrylonitrile fiber includes a spinning process in which a spinning dope including polyacrylonitrile is spun; a first drawing process; a drying process; and a second hot drawing process in this order.