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. 28, 2006
Filed:
Mar. 18, 2002
Bhalchandra Shripad Lele, Pune, IN;
Jean-christophe Leroux, Montréal, CA;
Bhalchandra Shripad Lele, Pune, IN;
Jean-Christophe Leroux, Montréal, CA;
Labopharm, Inc., Quebec, CA;
Abstract
This invention relates to novel amphiphilic diblock, triblock copolymers and star-shaped block copolymers comprising a biodegradable polymer covalently attached at the polymer ends, to a hydrophilic vinyl polymer, via divalent sulfur atom; to a process for producing the block polymers; to a polymerization process which comprises subjecting the monomers capable of radical polymerization to radical polymerization in the presence of a macromolecular biodegradable chain-transfer agent; and to pharmaceutical compositions comprising the block copolymers loaded with therapeutic agents.