Electrostatic coating of substrates of medicinal products
US5470603A · kind A · utility
95Cited by
19References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2258/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method of coating cores of pharmaceutical tablets with a dry powder, wherein the cores are fed onto a conveyor, the dry powder is supplied to a region through which the cores are to be conveyed, and the cores are conveyed on the conveyor through the region with the cores maintained at a different electric potential from the dry powder. In this way, the dry powder is attracted to the exposed surfaces of the cores to form powder coatings thereon. The dry powder on the surface of the cores is then melted to convert the powder into fused film coatings secured to the cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.