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:
Jan. 26, 1993
Filed:
Jun. 19, 1991
Applicant:
Inventors:
Mordechai Pasternak, Spring Valley, NY (US);
John Reale, Jr, Wappingers Falls, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
210638 ; 210640 ; 21050027 ; 21050036 ; 159D / ; 203 18 ; 568868 ;
Abstract
Charge aqueous solution containing 85 w % ethylene glycol is concentrated by pervaporation across a sulfonated polyethylene membrane to yield retentate containing 95 w % ethylene glycol.