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:
Apr. 09, 1991
Filed:
Feb. 16, 1989
Applicant:
Inventors:
Mordechai Pasternak, Spring Valley, NY (US);
Tansukhlal G Dorawala, Wappingers Falls, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 27 ; 521 28 ; 521 32 ;
Abstract
A dilute solution of methyl ethyl ketone is concentrated by pervaporation through a fluorinated ion exchange membrane which has been exchanged with a quaternary ammonium cation.
Quick Actions:
Pasternak, Mordechai. (1991). Ion exchange membrane (U.S. Patent No. 5006576). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5006576
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