Dispensing devices powered by hydrogel
US5792471A · kind A · utility
21Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Apr 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M31/002
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to devices useful for the controlled delivery of one or more beneficial agents to an environment of use. More specifically, this invention concerns such devices which are powered by hydrogel. This invention also relates to the controlled delivery of one or more beneficial agents to an aqueous environment of use through the use of such hydrogel powered dispensing devices. Also disclosed are methods for the controlled delivery of one or more beneficial agents to an aqueous environment of use which comprises administering to or otherwise placing the devices of this invention in the environment of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.