The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2008
Filed:
Jan. 16, 2007
Dieter Hochrainer, Schmallenberg, DE;
Georg Boeck, Laupheim, DE;
Hubert Hoelz, Oberheimbach, DE;
Christian Scheffler, Ingelheim, DE;
Christoph Kreher, Rhein, DE;
Dieter Hochrainer, Schmallenberg, DE;
Georg Boeck, Laupheim, DE;
Hubert Hoelz, Oberheimbach, DE;
Christian Scheffler, Ingelheim, DE;
Christoph Kreher, Rhein, DE;
Boehringer Ingelheim International GmbH, Ingelheim, DE;
Abstract
The measurement of the particle size distribution of an aerosol is of crucial importance in pharmaceutical development. A prerequisite for this is a valid method, e.g. the cascade impactor method described in the pharmacopoeias. It requires measurement of the active substance concentration in order to determine the particle size distribution. The invention provides a process which makes it possible to measure the size of aerosol droplets containing pharmaceutical substances which are unstable in the event of changes in the pH.