3816303 is referenced by 25 patents and cites 5 patents.

Semipermeable membranes are prepared from poly(N-amido)imides, i.e., polymers characterized by the recurring structural group ##SPC1##where R is a tetravalent organic radical and L is a divalent organic radical.

Title
Poly (n-amido) imides as semipermeable membranes
Application Number
05/316,935
Publication Number
3816303
Application Date
December 20, 1972
Publication Date
June 11, 1974
Inventor
Wrasidlo Wolfgang J
Agent
Lukasik Frank A
Brown William S
Assignee
The United States of America represented by the Secretary of the
IPC
B01d 13/00
C08G 73/14
C08G 73/00
B01D 71/64
B01D 71/00
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