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:
Feb. 23, 2021
Filed:
Mar. 24, 2017
Applicant:
Daicel Corporation, Osaka, JP;
Inventors:
Tomohiro Hashizume, Himeji, JP;
Hiroyuki Matsumura, Himeji, JP;
Tohru Shibata, Himeji, JP;
Mitsuru Ohno, Himeji, JP;
Assignee:
DAICEL CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 71/14 (2006.01); B01D 69/06 (2006.01); B01D 69/08 (2006.01); B01D 71/18 (2006.01); B01D 61/00 (2006.01); B01D 61/02 (2006.01);
U.S. Cl.
CPC ...
B01D 71/14 (2013.01); B01D 69/06 (2013.01); B01D 69/08 (2013.01); B01D 71/18 (2013.01); B01D 61/002 (2013.01); B01D 61/025 (2013.01); B01D 2325/02 (2013.01); B01D 2325/30 (2013.01);
Abstract
Provided is a semipermeable membrane having a high chlorine resistance. The semipermeable membrane is formed of a cellulose ester, the cellulose ester having an optionally substituted benzoyl group.