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:
Dec. 13, 1983
Filed:
Aug. 13, 1981
Applicant:
Inventor:
Franco Castino, Sudbury, MA (US);
Assignee:
American National Red Cross, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210641 ; 210645 ; 210648 ; 210651 ; 210181 ; 210182 ; 2101952 ; 2102572 ; 210259 ; 210295 ; 2103211 ; 210335 ; 435 68 ; 435240 ; 435241 ; 435803 ; 435811 ; 424 85 ;
Abstract
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.