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:
Mar. 31, 1981
Filed:
Jan. 10, 1979
Applicant:
Inventor:
John E Cadotte, Minnetonka, MN (US);
Assignee:
Midwest Research Institute, Kansas City, MO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C08G / ; C08C / ;
U.S. Cl.
CPC ...
210654 ; 2105002 ; 528337 ; 264 451 ; 427246 ; 525344 ;
Abstract
A composite permselective membrane is prepared by reaction of a film or layer containing cycloaliphatic polyfunctional secondary amines with a triacyl halide or its mixture with a diacyl halide. The membrane is useful in separating components of fluid mixtures or solutions, such as the removal of salts from aqueous solutions by reverse osmosis.