Time-controlled explosion systems and processes for preparing the same
US4871549A · kind A · utility
192Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1986 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 10, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5078
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a Time-Controlled Explosion System in which drug release is caused by explosion of a membrane after a definite time period, said System comprising a preparation in the form of a bead or granule, said preparation comprising a core, a drug, swelling agent and an outer membrane of water-insoluble coating material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.