Rate controlled dispenser for administering beneficial agent
US4684524A · kind A · utility
117Cited by
18References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1985 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Aug 8, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dispenser is disclosed for delivering a beneficial agent. The dispenser comprises (1) a housing defining an internal space, (2) a heat-responsive composition containing a beneficial agent in the space, (3) an osmotically effective solute in the space, and (4) at least one passageway in the housing for delivering the beneficial agent from the dispenser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.