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. 04, 2023
Filed:
Jul. 31, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Yoichiro Kozaki, Shiga, JP;
Masakazu Koiwa, Shiga, JP;
Fumi Hojo, Shiga, JP;
Satoko Kanamori, Shiga, JP;
Kentaro Kobayashi, Shiga, JP;
Masato Yanagibashi, Shiga, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 71/32 (2006.01); C12H 1/07 (2006.01);
U.S. Cl.
CPC ...
B01D 69/08 (2013.01); B01D 69/02 (2013.01); B01D 71/32 (2013.01); C12H 1/063 (2013.01); B01D 2221/06 (2013.01); B01D 2325/02 (2013.01); B01D 2325/24 (2013.01); B01D 2325/30 (2013.01); B01D 2325/36 (2013.01);
Abstract
The present invention relates to a separation membrane including an organic polymer resin, in which a volume V1 of fine pores having a pore diameter of 100 nm or more is 0.3 cm/g or more and 0.5 cm/g or less, a volume V2 of fine pores having a pore diameter of less than 100 nm is 0.02 cm/g or more and less than 0.1 cm/g, and a ratio V1/V2 of the fine pore volume V1 to the fine pore volume V2 is 3 or more and 60 or less.