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US 7,414,720 B2Granted
Measuring particle size distribution in pharmaceutical aerosols
OwnerHerbert Wachtel, Jochen Ziegler +5inventors
InventorsHerbert Wachtel, Jochen Ziegler, Dieter Hochrainer, Georg Boeck, Hubert Hoelz, Christian Scheffler, Christoph Kreher
Life of this patent
Estimating the term…
Abstract
Disclosed herein are methods for measuring the particle size distribution of a pharmaceutical aerosol, including methods utilizing laser diffraction.
Claims4
A method for measuring the particle size distribution of a pharmaceutical aerosol by the use of laser diffraction, comprising:
- generating an aerosol utilizing an inhaler;
- spraying the generated aerosol into pre conditioned air having a relative humidity of at least 80%;
- analyzing particle size distribution in the sprayed aerosol embedded into the pre-conditioned air using laser diffraction.
Dependencies are inferred from the claim text.