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:
May. 29, 1979
Filed:
Sep. 23, 1977
Applicant:
Inventor:
Warella R Browall, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 16 ; 55 66 ; 55 68 ; 55 70 ;
Abstract
Disclosed is an ultrathin permselective polyetherimide membrane having an average thickness of less than about 10 microns and formed of a polymeric composition comprising a polyetherimide prepared by reacting metaphenylenediamine and certain aromatic bis(ether anhydride)s. A gas separation process employing the membrane is also disclosed.
Browall, Warella. (1979). Ultrathin polyetherimide membrane and gas separation process (U.S. Patent No. 4156597). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4156597
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile