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. 03, 2025
Filed:
Oct. 30, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Takaaki Yasuda, Shiga, JP;
Yohei Adachi, Shiga, JP;
Shinya Mitsui, Shiga, JP;
Harutoki Shimura, Shiga, JP;
Takafumi Ogawa, Shiga, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/82 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/56 (2006.01);
U.S. Cl.
CPC ...
B01D 71/82 (2013.01); B01D 69/02 (2013.01); B01D 69/107 (2022.08); B01D 69/1213 (2022.08); B01D 69/1251 (2022.08); B01D 71/56 (2013.01); B01D 2323/36 (2013.01); B01D 2325/04 (2013.01); B01D 2325/06 (2013.01); B01D 2325/26 (2013.01); B01D 2325/36 (2013.01);
Abstract
The present invention relates to a composite semipermeable membrane including: a support membrane including a base and a porous support layer; and a separation functional layer disposed on the porous support layer and including a crosslinked aromatic polyamide, in which the separation functional layer contains sulfo groups in an amount of 7.0×10to 5.0×10g/mand includes a structure represented by the formula 1.