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:
Jul. 16, 1991
Filed:
Aug. 06, 1990
Applicant:
Inventor:
John Reale, Jr, Wappingers Falls, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210640 ; 210654 ;
Abstract
A polyethylenimine membrane which has been cross-linked by heat treating at 100.degree. C.-200.degree. C. for 3-20 minutes may be used to dewater isopropanol or methyl ethyl ketone/toluene mixtures.