04240914 is referenced by 41 patents and cites 4 patents.

A selective permeable membrane having self-supporting property which comprises a polyimide polymer consisting essentially of a repeating unit of the formula: ##STR1## wherein R is a divalent organic group, and a process for preparing the same.

Title
Selective permeable membrane and process for preparing the same
Application Number
5/961168
Publication Number
4240914
Application Date
November 16, 1978
Publication Date
December 23, 1980
Inventor
Masao Abe
Ibaragi
JP
Yasuo Kihara
Ibaragi
JP
Akio Iwama
Ibaragi
JP
Agent
Sughrue Rothwell Mion Zinn and Macpeak
Assignee
Nitto Electric Industrial
JP
IPC
B32B 5/18
B01D 31/00
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