Controlled release compositions
US5683719A · kind A · utility
9Cited by
3References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1995 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | May 18, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0092
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A controlled release composition comprising an extruded core of active material and excipients, said core being coated in a water insoluble coating. Preferably the core comprises a pharmaceutically acceptable active ingredient together with microcrystalline cellulose, a clay such as kaolin and a binder such as poly(vinyl-pyrrolidine).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.