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. 25, 1978
Filed:
Jan. 07, 1976
Applicant:
Inventors:
Masaru Kurihara, Otsu, JA;
Soichi Tokizane, Otsu, JA;
Tatsundo Tanaka, Otsu, JA;
Masamitsu Tanimura, Otsu, JA;
Yoichi Shimokawa, Otsu, JA;
Assignee:
Toray Industries, Inc., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 210 / ; 260 / ;
Abstract
Permselective membranes are prepared by crosslinking synthetic organic polyamides or polyhydrazides having --CO.sub.2 H groups and/or --SO.sub.3 H groups with a salt of metal selected from the class consisting of alkaline earth metals, transition metals, aluminum group metals and lead group metals. The membranes are useful in separating components of fluid mixtures or solutions such as water containing dissolved salts, and are especially useful in producing pure water from saline water.