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:
Jan. 09, 1990
Filed:
Jun. 30, 1988
Applicant:
Inventors:
Mogens Wumpelmann, Herlev, DK;
Henrik Mollgaard, Lyngby, DK;
Assignee:
Novo Industri A/S, Bagsvaerd, DK;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
435180 ; 435177 ; 435182 ;
Abstract
Immobilized biologically active material in particle form is prepared by cross-linking with glutaraldehyde and polyazetidine. An aqueous dispersion or solution of biologically active material is partially cross-linked with glutaraldehyde, a wet pasty mass is recovered by dewatering and the mass is sub-divided into discrete particles. A polyazetidine prepolymer is added before, at the beginning or subsequent to partially cross-linking but prior to subdividing the pasty mass into particles, and the prepolymer is allowed to cross-link.