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:
Jul. 01, 2003
Filed:
Aug. 08, 2002
Hans Leuenberger, Pfeffingen, CH;
Armin Karl Theodor Prasch, Freiburg, DE;
Bernhard Luy, Freiburg, DE;
Glatt GmbH, Binzen, DE;
Abstract
In the method for producing a particulate material ( ) from an at least partially liquid material ( ) containing a solvent and/or dispersant, this material ( ) is atomized in a process chamber ( ) into droplets which are frozen to particles ( ) by contact with a freezing fluid. The particles ( ) are then dried by freeze-drying in the or in another process chamber ( ) having a filter ( ) at the top. For the freeze-drying, cooled process gas is passed upward from below through the process chamber ( ) and through the filter ( ) in such a way that at least a substantial part of the particles ( ) rest against the filter ( ) at least for a substantial part of the freeze-drying taking place in the process chamber ( ). This makes it possible to dry a batch of particles ( ) in a short time.