Back to results
US 7,354,514 B2Granted
Method for isolating and drying microparticles (microspheres or microcapsules) initially dispersed or suspensed in liquid phase
AssigneeEthypharm
InventorsJoël Richard, Patrice Romain
Life of this patent
Estimating the term…
Abstract
A process for separating and drying microparticles initially dispersed in a liquid phase, comprising the steps: placing a preparation comprising microparticles dispersed or suspended in a liquid phase in a filtration container placed inside a chamber; filtering a fraction of the liquid phase through the container in the chamber; and varying the temperature and the pressure throughout the chamber in order to freeze dry the filtered preparation in the container maintained in the chamber.
Claims22
A process for separating and drying microparticles initially dispersed in a liquid phase, comprising the steps:
- placing a preparation comprising microparticles dispersed or suspended in a liquid phase in a filtration container placed inside a chamber;
- filtering a liquid fraction of the liquid phase through the container in the chamber;
- and
- varying the temperature and the pressure throughout the chamber in order to freeze dry the filtered preparation in the container maintained in the chamber.
1 more element
Dependencies are inferred from the claim text.