Solvent extraction from biodegradable microparticles
US10137089B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Nov 21, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/206
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Embodiments may also include a system for reducing a solvent concentration in a plurality of microparticles. The system may include a solvent extraction tank. In the solvent extraction tank, a mixture including the plurality of microparticles and the solvent may be contacted with water to form an aqueous suspension. A first portion of the solvent may dissolve into the water of the aqueous suspension to reduce the solvent concentration in the plurality of microparticles. The system may also include a concentration unit in fluid communication with the solvent extraction tank. The concentration unit may further reduce the solvent concentration in the plurality of microparticles. A microparticle concentrate may be formed. The system may further include a washing unit. In the washing unit, the microparticle concentrate may be contacted with a washing solution and may form an amalgam of washed particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.