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. 16, 2002
Filed:
Oct. 14, 1998
Applicant:
Inventors:
Colin Gegg, Newbury Park, CA (US);
Olaf Kinstler, Newbury Park, CA (US);
Assignee:
Amgen Inc., Thousand Oaks, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/818 ; C07K 1/4475 ;
U.S. Cl.
CPC ...
A61K 3/818 ; C07K 1/4475 ;
Abstract
The present invention relates generally to the chemical modification of biologically active agents. More, specifically, the invention relates to a novel approach to engineer, through mutagenesis and site-directed chemical conjugation, specific, well-defined dualPEGylated-protein bioconjugates, consisting of two polyethylene glycol (PEG) macromolecules chemically conjugated to the protein at two specifically defined amino acid residues. The described dualPEGylated-protein bioconjugates show substantially improved bioefficacy and biocompatibility.