Metered dose valves and dispensers
US9067031B2 · kind B2 · utility
14Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2007 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Dec 21, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/75
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A metered dose valve for use in a pressurized metered dose dispenser for dispensing a metered dose of an aerosol formulation comprising particles of a medicament suspended in liquefied propellant, optionally in combination with one or more excipients, the valve comprising a metering chamber and at least one porous, fluid permeable, particulate semi-permeable body, the at least one porous body being positioned within a region of the interior conduit of the valve, for example within the metering chamber, or a pre-metering chamber and/or an internal channel upstream of the metering chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.