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:
Jun. 01, 2021
Filed:
Jun. 23, 2017
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Shun Shimura, Otsu, JP;
Kenta Iwai, Otsu, JP;
Masayuki Hanakawa, Otsu, JP;
Tamotsu Kitade, Otsu, JP;
Masahiro Kimura, Shiga, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 69/12 (2006.01); B01D 71/34 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0027 (2013.01); B01D 67/0009 (2013.01); B01D 67/0016 (2013.01); B01D 67/0018 (2013.01); B01D 69/02 (2013.01); B01D 69/08 (2013.01); B01D 69/12 (2013.01); B01D 71/34 (2013.01); B01D 2323/08 (2013.01); B01D 2323/10 (2013.01); B01D 2323/12 (2013.01); B01D 2325/02 (2013.01); B01D 2325/021 (2013.01); B01D 2325/24 (2013.01); B01D 2325/34 (2013.01);
Abstract
The present invention relates to a composite porous hollow-fiber membrane including a first layer and a second layer which each include a fluororesin-based polymer, in which the first layer has a columnar texture oriented in a longitudinal direction of the composite porous hollow-fiber membrane, the columnar texture has an average value v of a Raman orientation parameter calculated with the specific formula, and the second layer has a three-dimensional network texture and has an average surface-pore diameter of 5.0 nm to 5.0 μm.