Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Aftertreated polymer
Reexamination Certificate
2007-12-25
2007-12-25
Hartley, Michael G. (Department: 1618)
Drug, bio-affecting and body treating compositions
Solid synthetic organic polymer as designated organic active...
Aftertreated polymer
C424S078080, C424S078170, C525S205000
Reexamination Certificate
active
10962204
ABSTRACT:
The present invention relates to an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block with a terminal hydroxyl group wherein the terminal hydroxyl group of the hydrophobic bock is substituted with a tocopherol or cholesterol group. It also relates to polymeric compositions capable of forming stable micelles in an aqueous solution, comprising the amphiphilic block copolymer and a polylactic acid derivative wherein one or more ends of the polylactic acid are covalently bound to at least one carboxyl group.
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Choi In Ja
Kim Bong Oh
Seo Min Hyo
Shim Myung Seob
Hartley Michael G.
Samyang Corporation
Thorpe North & Western LLP
Vu Jake M.
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