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US 10,945,972 B2Granted
Particulate materials
AssigneeNektar Therapeutics
InventorsPeter York, Boris Yu Shekunov, Mahboob Ur Rehman, Jane Catherine Feeley
Life of this patent
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Abstract
The present invention relates to active substances in particulate form, to methods for preparing them and to their uses. The present invention provides particulate powders, such as might be of use for delivery using a dry powder inhaler (DPI) or similar delivery device, having properties which may be beneficial to the DPI delivery process.
Claims3
A method of administering an active substance by inhalation, said method comprising:
- providing a composition comprising an active substance in particulate form suitable for administration via a dry powder inhaler, said particulates comprising:
- a) a volume mean aerodynamic diameter of less than 7 microns;
- b) a density less than 0.5 g/ml;
- and
- c) a surface-to-volume ratio of at least twice that of spherical particles of the same volume diameter, and
- administering said composition to the respiratory tract by oral inhalation via a dry powder inhaler.
3 more elements
Dependencies are inferred from the claim text.