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:
Aug. 06, 1985
Filed:
Feb. 03, 1984
Applicant:
Inventor:
Koichi Okita, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55158 ; 55 16 ; 264 22 ; 427 40 ; 427 41 ;
Abstract
A gas-permselective composite membrane, and a process for producing the composite membrane are described. This composite membrane comprises a heat-resistant porous polymeric membrane and a thin layer of a tertiary carbon or tertiary organic silicon-containing compound provided on one side of the membrane, the layer being prepared by polymerizing the compound by means of plasma. The membrane has highly permselective as well as superior strength and heat resistance.