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. 23, 1976
Filed:
May. 22, 1974
Applicant:
Inventors:
Masaru Kurihara, Otsu, JA;
Kojuro Ikeda, Otsu, JA;
Noriaki Dokoshi, Otsu, JA;
Akio Kobayashi, Kusatsu, JA;
Assignee:
Toray Industries, Inc., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 2105 / ; 260 302 ; 260 / ; 260 / ; 260 322 ; 260 / ; 260 / ; 260 49 ; 260 / ; 260 65 ; 260 / ; 260 / ; 260 / ; 260 7841 ; 260 / ; 260823 ; 2608 / ;
Abstract
Permselective membranes are prepared from novel synthetic organic aromatic or alicyclic polyamides or polyhydrazides of the formula ##EQU1## The membranes are useful in separating components of fluid mixtures or solutions such as water containing dissolved salts or lactam.