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. 20, 2012
Filed:
Jul. 16, 2008
Applicants:
Josef Burg, Weilheim, DE;
Klaus Reichert, Oberhausen, DE;
Axel Schroth, Sindelsdorf, DE;
Hartmut Schurig, Loerrach, DE;
Axel Wessner, Penzberg, DE;
Inventors:
Josef Burg, Weilheim, DE;
Klaus Reichert, Oberhausen, DE;
Axel Schroth, Sindelsdorf, DE;
Hartmut Schurig, Loerrach, DE;
Axel Wessner, Penzberg, DE;
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07K 1/00 (2006.01); B01D 15/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is a method for the purification of mono-PEGylated erythropoietin using two cation exchange chromatography steps wherein the same type of cation exchange material is used in both cation exchange chromatography steps and a method for producing a mono-PEGylated erythropoietin in substantially homogeneous form.