Aqueous dispersion of hydrogel nanoparticles with inverse...

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Matrices

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C424S487000, C977S702000, C977S897000, C977S906000

Reexamination Certificate

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08048450

ABSTRACT:
An aqueous dispersion of hydrogel nanoparticles and methods of making the aqueous dispersion of hydrogel nanoparticles having an interpenetrating polymer network (“IPN”) are described. The uniformed sized mono-disperse IPN nanoparticles have inverse thermo gelation properties that allow therapeutic medications to be uniformly distributed in a liquid form of the aqueous dispersion of hydrogel nanoparticles. Such medications can then be released from a solid form of the aqueous dispersion of hydrogel nanoparticles in time dependant manor.

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