Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-08-28
2007-08-28
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S326900, C525S354000, C525S350000, C525S09200D, C526S303100
Reexamination Certificate
active
10727083
ABSTRACT:
The instant invention provides a two-step polymerization process for preparing amphiphilic poly(N-vinyl-2-pyrrolidone), (PVP)-block-polyester copolymers and other diblock and triblock copolymers consisting of PVP as one block. The block copolymers of the invention can be used as vehicles for drug delivery.
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Bibeau Genevieve
Gori Sandra
Lafreniere Julie
Lebrun Frederic
Lessard David
Asinovsky Olga
Labopharm Inc.
McHale & Slavin P.A.
Seidleck James J.
LandOfFree
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