Focused acoustic energy in the generation of solid particles
US6610223B2 · kind B2 · utility
21Cited by
4References
109Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and device for generating solid particles using focused acoustic energy are provided. A solution of a compound of interest is provided in a solvent, which may be an aqueous fluid, a nonaqueous fluid, or a supercritical fluid. Focused acoustic energy is used to eject a droplet of the solution, which is then directed into or through an antisolvent that upon admixture with the solution droplet causes the compound in the droplet to precipitate. In a preferred embodiment, the solvent is an aqueous or organic liquid, and the antisolvent is a supercritical fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.