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. 21, 1990
Filed:
Mar. 07, 1989
Applicant:
Inventors:
Shinichi Yamada, Ootsu, JP;
Kuniyasu Shiro, Ootsu, JP;
Assignee:
Toray Industries Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
55158 ; 55 16 ;
Abstract
A gas separation membrane with excellent gas separation properties is disclosed. The gas separation membrane is substantially free from pinholes and consists essentially of a crosslinked polyolefin or a crosslinked polyarylene oxide. This gas separation membrane is produced by evaporating a solution containing a polyolefin or a polyarylene oxide having an active functional group which can form crosslinking site therebetween or which can react with a crosslinking agent to form a crosslinking site.