Expandable osmotic composition and coating suspension
US7338663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/085
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention includes an expandable osmotic layer and a coating suspension for providing an expandable osmotic layer, both of which are useful for the manufacture of controlled release dosage forms. The expandable osmotic layer of the present invention may be produced using the coating suspension of the present invention. Advantageously, the coating suspension of the present invention can be used to coat expandable osmotic layers under both wet and dry process conditions without sacrificing the quality of the expandable osmotic layers produced, and therefore provides a relatively robust coating suspension that facilitates commercial production of controlled release dosage forms including a coated expandable osmotic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.