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:
Feb. 22, 2000
Filed:
Apr. 29, 1998
Applicant:
Inventors:
Bernd Eck, Viernheim, DE;
Jorg Heilek, Bammental, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
62532 ; 62123 ;
Abstract
In a process for crystallizing material to be isolated, fluid is vaporized from a melt or a solution comprising the material to be isolated and the fluid and the vaporized fluid is condensed or absorbed in a liquid material to form a liquid mixture, wherein the fluid components to be condensed/absorbed have partial pressures over the liquid mixture which are smaller than the partial pressures of these components over the crystallizing solution/melt and the freezing point of the liquid mixture is lower than the condensation/absorption temperature in the liquid mixture.