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:
Aug. 03, 2021
Filed:
May. 30, 2017
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Kenta Iwai, Shiga, JP;
Masayuki Hanakawa, Shiga, JP;
Tamotsu Kitade, Shiga, JP;
Masahiro Kimura, Shiga, JP;
Toshiyuki Ishizaki, Shiga, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 71/34 (2006.01); C08J 9/26 (2006.01); B01D 67/00 (2006.01); C02F 1/44 (2006.01); C02F 103/08 (2006.01);
U.S. Cl.
CPC ...
B01D 69/02 (2013.01); B01D 67/0018 (2013.01); B01D 67/0027 (2013.01); B01D 69/087 (2013.01); B01D 71/34 (2013.01); C08J 9/26 (2013.01); B01D 2325/02 (2013.01); B01D 2325/20 (2013.01); B01D 2325/24 (2013.01); B01D 2325/30 (2013.01); B01D 2325/34 (2013.01); C02F 1/44 (2013.01); C02F 2103/08 (2013.01);
Abstract
The porous hollow-fiber membrane of the present invention comprises a fluororesin polymer, and has columnar structures oriented in the longitudinal direction thereof. In the porous hollow-fiber membrane, molecular chains of the fluororesin polymer have been oriented in the longitudinal direction of the porous hollow-fiber membrane and have an average value ν of Raman orientation parameter of 1.5-4.0.