Pressurized aerosol compositions comprising powdered medicament dispersed in hydrofluoroalkane
US6641800B1 · kind B1 · utility
18Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jul 13, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/008
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Pressurized aerosol composition for administration by inhalation comprising a liquefied hydrofluoroalkane, a powdered medicament dispersed therein, and a suspending agent comprising a polymer soluble in the liquefied hydrofluoroalkane which is selected from polymers including recurring amide containing structural units, copolymers of amide containing units and carboxylic acid ester units, polyvinylacetate and acrylic acid/methacrylic acid ester copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.