Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Matrices
Reexamination Certificate
2006-03-28
2006-03-28
Page, Thurman K. (Department: 1618)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Matrices
C424S450000, C514S772300
Reexamination Certificate
active
07018655
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.
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Lele Bhalchandra Shripad
Leroux Jean-Christophe
Fubara Blessing
Labopharm Inc.
McHale & Slavin P.A.
Page Thurman K.
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