PEG-poly(ortho ester) graft copolymers and pharmaceutical compositions
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United States of America Patent
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Nov 25, 2008
Grant Date -
Oct 19, 2006
app pub date -
Mar 28, 2006
filing date -
Mar 31, 2005
priority date (Note) -
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Abstract
This invention relates to graft copolymer delivery vehicles comprising a polyethyleneglycol-poly(ortho ester), and to controlled release pharmaceutical compositions comprising the delivery vehicle and an active agent. The graft copolymer delivery vehicles may be thermogels graft copolymers. The pharmaceutical compositions may be in the form of a topical, syringable, or injectable formulation for local controlled delivery of the active agent.
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