Wurster fluid bed coater with agglomeration enhancement screen
US7147717B2 · kind B2 · utility
1Cited by
1References
4Claims
0Family size
Inventors
Key dates
| Filing date | Dec 18, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Dec 18, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved Wurster-type coater including a separator screen located within the Wurster tube in surrounding relationship to the spray nozzle and forming an annular volume through which at least a portion of smaller feed material particles are permitted to preferentially enter the spray pattern before the larger-sized particles can do so, thereby causing the smaller particles to become agglomerated first, resulting in finished product having a more even distribution of particle sizes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.