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:
Oct. 11, 2011
Filed:
Mar. 09, 2006
Jan Moschwitzer, Berlin, DE;
Jan Moschwitzer, Berlin, DE;
Abbott GmbH & Co. KG, Wiesbaden, DE;
Abstract
The invention concerns a method for producing ultrafine suspensions, characterized in that a substance in the form of a solid product at 20° C. is dissolved in a solvent, in that the solvent is very rapidly substantially drawn from said solution, in that the powder thus obtained, whereof the particles have an average particle-size distribution of the order of 1 to 50 μm (by laser diffractometry) is dispersed in a dispersing medium, and in that the resulting suspension is treated subsequently, using average to high forces, so as to obtain a suspension whereof the solid matter particles have a average particle-size distribution (by photon correlation spectroscopy) less than 3 μm, preferably less than 1 μm (1000 nm), and in particular less than 400 nm, more particularly still, less than 200 nm.