Ultrafine particle power for inhalation and method for production thereof
US5972388A · kind A · utility
44Cited by
11References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 7, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jan 7, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0075
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An ultrafine particle powder for inhalation to be delivered mainly to a lower airway, containing specific cellulose lower alkyl ethers and a medicament, at least 80% of the powder having a particle size in the range of 0.5 to 10 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.