Method for preparing medicinal aerosol formulation containing coated medicament
US5348730A · kind A · utility
75Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5015
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for preparing a self-propelling, powder dispersing aerosol composition comprising at least 0.0001% by weight of a finely-divided solid medicament coated with a non-perfluorinated surface active dispersing agent which constitutes at least 0.0001% by weight of the coated solid material, and suspended in an aerosol propellant in which the non-perfluorinated surface-active dispersing agent is substantially insoluble. Propellant-insoluble non-perfluorinated surfactants are used to prepare stable dispersions of powdered medicament by way of pre-coating the medicament with the surfactant prior to admixture with propellant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.