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:
Nov. 18, 1991
Applicant:
Inventor:
Mordechai Pasternak, Spring Valley, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210640 ; 55 16 ;
Abstract
Aqueous solutions of organic oxygenates, typified by concentrated aqueous solutions of ethanol or isopropanol, are dewatered by pervaporation through a polyimine membrane which has been interfacially cross-linked with a polyisocyanate or a poly(carbonyl chloride).