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. 13, 2002
Filed:
Jul. 26, 1999
Applicant:
Inventors:
Joachim Storch, London, GB;
Robert Neil Hanley, Surrey, GB;
Richard Neil Templar Freeman, Surrey, GB;
Assignee:
Biocompatibles Limited, Surrey, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/42 ;
U.S. Cl.
CPC ...
C02F 1/42 ;
Abstract
Anion exchange material surfaces are provided with zwitterionic and cationic groups, preferably by coating with a polymer formed from monomers including a zwitterionic monomer, a cationic monomer and, optionally, a termonomer providing stable binding at the substrate surface. The ion exchange materials may be used to scavenge heparin from blood by an ion exchange separation process. The zwitterionic group reduces the rate of fouling by biological materials such as proteins.