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:
Jul. 21, 1987
Filed:
Feb. 22, 1985
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
435 41 ; 435177 ; 435180 ;
Abstract
When immobilizing cells and/or enzymes by contact with tannin, epihalohydrin/polyamine copolymer and glutaraldehyde, immobilizing is carried out in the presence of a primary amine. The primary amine is preferably sulfuric acid mono-(2-aminoethyl)-ester, 2-aminoethanol, glycine or tris-(hydroxymethyl)-amino methane. The resulting immobilized cells and/or enzymes retain a higher proportion of their original activity.