Device for delivering an aerosol
US5290539A · kind A · utility
66Cited by
20References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1991 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Dec 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/062
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A device for delivering an aerosol, comprising: a casing member, a valve stem, and a diaphragm, wherein the diaphragm comprises a thermoplastic elastomer comprising a ethylene/1-butene copolymer. Also disclosed are sealing members comprising such an elastomer and thermoplastic polymer blends, e.g., for use in sealing members of the invention. The devices of the invention are particularly useful with formulations containing 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane as the propellant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.