Aqueous dispersion of hydrogel nanoparticles with inverse thermoreversible gelation
US8048450B2 · kind B2 · utility
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44Claims
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Key dates
| Filing date | Dec 9, 2004 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Dec 9, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/906
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.