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. 03, 1992
Filed:
Sep. 13, 1991
Applicant:
Inventors:
Tomoo Yamaguchi, Toyohashi, JP;
Kenichi Ikeda, Kusatsu, JP;
Assignee:
Nitto Denko Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
21050038 ; 264 451 ; 264D / ; 264D / ;
Abstract
A composite reverse osmosis membrane composed of a microporous support layer and a thin layer supported thereon, characterized in that the thin layer is made of a crosslinked polyamide which comprises a polyamine component having two or more amino groups in the molecule and an acid component containing a linear aliphatic polyacid halide having two or more halogenated carbonyl groups in the molecule.