Semi-enclosed gel delivery device
US6994270B2 · kind B2 · utility
13Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Nov 24, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L9/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dispenser of actives having a linear release rate may be achieved by providing a volatile containing gel system wherein the gel system is proportioned in specified dimensional ratios, so that the sum of the rate of volatile release from directly exposed areas of the surface of the gel system and the rate of volatile release from areas of the surface of the gel system which are not in direct exposure to the atmosphere remains essentially constant through out the life of the dispensing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.