Osmotic device comprising means for governing initial time of agent release therefrom
US4609374A · kind A · utility
127Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1985 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Apr 22, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An osmotic dispensing device is disclosed for delivering a medicine to a biological environment of use. The device comprises a semipermeable wall surrounding a compartment with an osmotic passageway in the semipermeable wall connecting the outside of the device with the compartment. The compartment house a medicine releasably held on a carrier member selected from the group consisting of cellulose esters, cellulose ethers and cellulose ester-ethers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.