Device for releasing with delayed effect an active substance, in particular veterinary
US6416781B1 · kind B1 · utility
2Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W90/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A device for dispensing an active substance to be used in a biological medium, in particular in the rumen of an animal, includes a sealed receptacle for containing the substance, and having at least one opening; a closure for provisionally closing the opening of the receptacle, the closure being maintained closed by at least one biodegradable element such that subsequent to the biological degradation of the element, the closure completely releases the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.