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:
Nov. 08, 2016
Filed:
Dec. 20, 2010
Kentaro Takagi, Otsu, JP;
Tomoko Mitsuhata, Otsu, JP;
Takao Sasaki, Otsu, JP;
Takeharu Inoue, Ehime, JP;
Takashi Yoshino, Ehime, JP;
Kiyohiko Takaya, Otsu, JP;
Yutaro Suzuki, Otsu, JP;
Kentaro Takagi, Otsu, JP;
Tomoko Mitsuhata, Otsu, JP;
Takao Sasaki, Otsu, JP;
Takeharu Inoue, Ehime, JP;
Takashi Yoshino, Ehime, JP;
Kiyohiko Takaya, Otsu, JP;
Yutaro Suzuki, Otsu, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
Provided is a semipermeable membrane having at least a separating functional layer, wherein azo compounds are retained in the separating functional layer, and the separating functional layer has a yellow index of 10 to 40. Also provided is a method of producing the semipermeable membrane. The present invention provides a semipermeable membrane having not only high water permeability but also high rejection performance even for substances that are nondissociative in the neutral range, such as boric acid, and showing high durability and a manufacturing method therefor.