Device and method for encapsulation of hydrophilic materials
US9308172B2 · kind B2 · utility
2Cited by
2References
26Claims
0Family size
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Key dates
| Filing date | Oct 24, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Jan 4, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/711
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for preparing polymeric composite particles includes the steps of preparing an oil phase containing a biodegradable polymer and a water phase containing a hydrophilic compound or nanoparticle and emulsifying the oil phase in the water phase to form emulsions. Then solvent is removed from the emulsions to prepare the particles in the form of capsules and spheres in sizes from 0.01 μm (10 nm) to 50 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.