Aerosol carriers
US5254330A · kind A · utility
115Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Sep 20, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/26
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Pharmaceutical excipients useful in dry powder inhalents comprise particles having a rugosity (measured by air permeametry) of less than 1.75. The use of these carriers increases the amount of drug injested by the patient using a dry powder inhaler. The preferred excipients are crystalline sugars such as lactose which may conveniently be prepared by controlled crystallisation from an aqueous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.