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. 20, 1990
Filed:
Jan. 02, 1990
Applicant:
Inventor:
Craig R Bartels, Wappinger Falls, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210640 ; 55 16 ;
Abstract
Water is separated from aqueous mixtures of organic oxygenates such as isopropanol by pervaporation through a non-porous separating membrane of a blend of polyvinyl alcohol and a polyacrylic acid mounted on a polysulfone porous support layer.