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:
Mar. 19, 1991
Filed:
May. 19, 1988
Applicant:
Inventors:
Richard L Antrim, Sparta, NJ (US);
Donald W Harris, Decatur, IL (US);
Assignee:
Cultor, Ltd., Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C08B / ;
U.S. Cl.
CPC ...
435179 ; 435176 ; 435180 ; 435234 ; 435815 ; 530814 ; 536 56 ;
Abstract
A composite containing DEAE-cellulose agglomerated with a hydrophobic polymer is treated with tap water, deionized water or a dilute salt solution at a temperature of at least 60.degree. C. for a time sufficient to increase adsorption capacity for charged macromolecules by at least about 30%. Treatment is preferably at a temperature of about 80.degree. to about 100.degree. C. for a time period of about one-half hour to about 5 hours. The macromolecule is preferably a protein such as the enzyme, glucose isomerase.