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:
Apr. 18, 2000
Filed:
Aug. 18, 1998
Applicant:
Inventors:
Masatoshi Maeda, Osaka, JP;
Masahiro Yoshioka, Osaka, JP;
Takahiro Fukuoka, Osaka, JP;
Michie Sakamoto, Osaka, JP;
Amane Mochizuki, Osaka, JP;
Assignee:
Nitto Denko Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; B01D / ;
U.S. Cl.
CPC ...
528310 ; 528170 ; 528220 ; 528229 ; 528322 ; 528353 ; 4284111 ; 4284735 ; 21050021 ; 21050027 ; 21050039 ;
Abstract
Disclosed is a gas separating membrane comprising a layer made of a polycarbodiimide resin having repeating units represented by formula (I): ##STR1## wherein R represents a divalent organic group. The gas separating membrane available according to the present invention has high permeability and separation selectivity as well as excellent permeating performance, and further has excellent heat resistance, chemical resistance and durability.