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:
Apr. 29, 2003
Filed:
Dec. 20, 1999
Applicant:
Inventors:
Horst Hartmann, Böhl-Iggelheim, DE;
Wolfram Burst, Mannheim, DE;
Wulf Kaiser, Bad Dürkheim, DE;
Harald Laas, Maxdorf, DE;
Paul Grafen, Weisenheim, DE;
Bernhard Bockstiegel, Römerberg, DE;
Kai-Uwe Baldenius, Frankenthal, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/00 ; B01D 4/700 ;
U.S. Cl.
CPC ...
B01D 3/00 ; B01D 4/700 ;
Abstract
A reflection column which contains liquid distributors having at least 500 drip points/m , which are arranged at an angle of about 90° C. to cloth layers of packing elements located immediately therebelow; and a combination of insulation and protective heating. The column is advantageously used for the rectification of mixtures of high-boiling air- or temperature-sensitive substances requiring effective separation efficiency.