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. 31, 2021
Filed:
Mar. 05, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Koichi Takada, Shiga, JP;
Gohei Yamamura, Shiga, JP;
Ryuichiro Hiranabe, Shiga, JP;
Hiroki Tomioka, Shiga, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 67/00 (2006.01); B01D 71/48 (2006.01); B01D 71/56 (2006.01); B01D 71/18 (2006.01); C08J 5/18 (2006.01); B01D 71/16 (2006.01); B01D 69/12 (2006.01);
U.S. Cl.
CPC ...
B01D 71/18 (2013.01); B01D 67/002 (2013.01); B01D 69/02 (2013.01); B01D 69/08 (2013.01); B01D 69/081 (2013.01); B01D 69/12 (2013.01); B01D 71/16 (2013.01); B01D 71/48 (2013.01); B01D 71/56 (2013.01); C08J 5/18 (2013.01); B01D 2325/021 (2013.01); B01D 2325/04 (2013.01);
Abstract
A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.