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. 14, 1981
Filed:
Oct. 12, 1979
Applicant:
Inventor:
Ernest Knight, Jr, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424 85 ; 435811 ;
Abstract
Human interferons produced in the absence of added serum or sera can be purified to greater than 95% protein purity by adsorption on immobilized Cibacron Blue F3G-A and eluting the interferon adsorbed on the Cibacron Blue F3G-A with ethylene glycol in an aqueous buffer solution. The purified interferon in solution can be converted to interferon of uniform molecular weight by heating the interferon solution in the presence of an organic thiol compound.