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:
Feb. 28, 1995
Filed:
Nov. 05, 1993
Applicant:
Inventor:
John W Simmons, Wilmington, DE (US);
Assignee:
L'Air Liquide S.A., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
95 45 ; 95 54 ; 96 10 ; 96 14 ;
Abstract
Novel substituted aromatic polyetherketone gas separation membranes and the process of using such membranes to separate one or more gases from a gaseous mixture is disclosed. The polyetherketones are formed from aromatic alcohols of the formula ##STR1## where Z is independently alkyl groups having 1 to 10 carbon atoms, most preferably a tertiary butyl group, n is an integer from 1 to 4, preferably 1.