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:
Aug. 20, 1996
Filed:
Dec. 23, 1994
Applicant:
Inventors:
Wolfgang Demmer, Gottingen, DE;
Hans-Heinrich Horl, Bovenden, DE;
Dietmar Nussbaumer, Gottingen, DE;
Abdul R Weiss, Gottingen, DE;
Eberhard Wunn, Gottingen-Nikolausberg, DE;
Assignee:
Sartorius AG, Gottingen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210490 ; 21050035 ; 21050042 ; 427245 ;
Abstract
Fabrication of the surface-grafted microporous membranes by coating the membrane with an N-halogenated compound, followed by grafting with an unsaturated monomer and sodium dithionite in a primarily aqueous solution that may contain an organic halogen compound selected from carbon tetrachloride and trichloroacetic acid. The coating may be formed in situ and may be cross-linked.