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:
Sep. 14, 1976
Filed:
Mar. 31, 1975
Applicant:
Inventor:
Warella R Browall, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B32B / ;
U.S. Cl.
CPC ...
55158 ; 55 16 ; 156 94 ; 427140 ; 428320 ; 428412 ; 2105 / ;
Abstract
A method is described for sealing pinholes and covering imperfections passing through a multi-layer membrane composite to be employed for conducting a gas separation process. The particular breaches through such composites that this invention is intended to deal with are those caused by the unavoidable presence of particles smaller than about 3000 A. By this method an additional ultrathin membrane of very flexible, permeable polymer material is applied over the outer surface of the membrane composite.