Aerosol filling method
US5275212A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1993 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Feb 24, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A process for preparing a medicinal aerosol formulation containing a propellant that is gaseous at standard temperature and pressure and filling the formulation into a metered dose aerosol canister. The process involves mixing the propellant and the drug at ambient temperature and under pressure sufficient to liquify the propellant to afford a formulation. The formulation is cooled to a temperature sufficiently low to liquify the propellant at atmospheric pressure and filled into aerosol canisters in an environment of controlled humidity. An aerosol valve is placed on each aerosol canister and the finished canisters are removed from the controlled environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.