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:
Dec. 15, 2015
Filed:
Mar. 30, 2011
Detlef Grawe, Kleinromstedt, DE;
Sabine Gliesing, Jena, DE;
Detlef Grawe, Kleinromstedt, DE;
Sabine Gliesing, Jena, DE;
Jesalis Pharma GmbH, Jena, DE;
Abstract
A method and device for producing crystalline active ingredient particles. The active ingredient is crystallized from a supersaturated solution on the surface of particles of the active ingredient. A suspension of active ingredient particles is subjected to wet grinding in a supersaturated solution of the active ingredient in a first module. At least a part of the suspension is fed from the first module into the second module where it is cooled and simultaneously subjected to ultrasound. The suspension is fed back into the first module after cooling and being subjected to ultrasound. Active ingredient solution and optionally antisolvent are added to the suspension and active ingredient particles and liquid phase are extracted. A relative supersaturation of the active ingredient in the liquid phase of the suspension, relative to the entire liquid phase, is ≦90%, and the extracted active ingredient particles comprise a mean particle size of 10-500 μm.