Method of producing zero-order controlled-released devices
US5085866A · kind A · utility
49Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P1/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved method of producing a reservoir device having a rate-controlling membrane and zero-order (constant) release of an agent is provided. A core is sprayed with a solution having a polymer and a solvent, the solvent having a first component which is a rapidly evaporating, low-boiling-point first solvent and a slowly evaporating, high-boiling-point second solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.