Process for producing a tablet core aperture
US5256440A · kind A · utility
43Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jun 22, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2072
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Process for preparing and film coating a dosage form. An intagliated dosage form core is produced by inscribing one or more areas on the surface of the dosage form core prior to coating. An aqueous dispersion of a polymeric coating is then applied to the intagliated dosage form core. When placed in an environment of use, the film coating within the circumscribed region of the dosage form surface is reproducibly expelled, leaving a coated core tablet with a predefined aperture in the coating which exposes a discrete portion of the core surface to the environment of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.