Canister containing aerosol formulations containing P134a and particulate medicaments
US5817293A · kind A · utility
43Cited by
24References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P29/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to a canister suitable for delivering a pharmaceutical aerosol formulation for inhalation therapy including a propellant which comprises a container capable of withstanding the vapor pressure of the propellant used, which container is closed with a metering valve and contains a pharmaceutical aerosol formulation for inhalation therapy consisting essentially of a physiologically effective amount of particulate medicament, 1,1,1,2-tetrafluoroethane as propellant and up to 5% w/w based upon propellant of a polar co-solvent, which formulation is substantially free of surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.