Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Aftertreated polymer
Reexamination Certificate
2005-05-10
2005-05-10
Zalukaeva, Tatyana (Department: 1713)
Drug, bio-affecting and body treating compositions
Solid synthetic organic polymer as designated organic active...
Aftertreated polymer
C514S690000, C525S046000, C525S169000, C525S218000, C525S255000, C525S259000, C525S330500, C525S330400, C525S333300, C525S340000
Reexamination Certificate
active
06890524
ABSTRACT:
This invention provides a method of preparing a polymeric delivery system for active ingredients. The delivery system is formed either by attaching the active ingredient to a linker through a hydrolyzable covalent bond, then forming a covalent bond between the linker and a portion of the subunits of a cross-linked polymer, or by attaching a linker to a portion of the subunits of a cross-linked polymer, then attaching the active ingredient to the polymer-linker combination through a hydrolyzable covalent bond. The invention also provides a delivery system comprising an active ingredient covalently bonded through a hydrolyzale covalent bond to a linker, which is in turn covalently bonded to a portion of subunits of a cross-linked polymer.
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Baude Eric J.
King Karen B.
Monsanto Company
Zalukaeva Tatyana
LandOfFree
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