04420398 is referenced by 106 patents and cites 12 patents.

This invention affords a filtration method and apparatus for extracting cell produced antiviral substances (CPAS) from a production broth using cross-flow membrane filtration. The broth is perfused into a first filtration cell and caused to cross-flow across an ultrafiltration membrane in the cell, permitting a first filtrate to pass through the membrane consisting essentially of CPAS and some molecular species and retaining in a first ex-filtrate all remaining portions of the broth.

Title
Filteration method for cell produced antiviral substances
Application Number
6/292582
Publication Number
4420398
Application Date
August 13, 1981
Publication Date
December 13, 1983
Inventor
Franco Castino
Sudbury
MA, US
Agent
Holman & Stern
Assignee
American National Red Cross
DC, US
IPC
B01D 31/00
B01D 13/00
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