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. 18, 2006
Filed:
Jul. 02, 2002
Karl-heinz Wostbrock, Mörstadt, DE;
Joachim Thiel, Neustadt, DE;
Heinz Krüger, Limburgerhof, DE;
Eckhard Ströfer, Mannheim, DE;
Markus Weber, Ludwigshafen, DE;
Bernd Gerber, Ludwigshafen, DE;
Bernd Rumpf, Hockenheim, DE;
Bernd Sachweh, Meckenheim, DE;
Steffen Kerth, Ludwigshafen, DE;
Karl-Heinz Wostbrock, Mörstadt, DE;
Joachim Thiel, Neustadt, DE;
Heinz Krüger, Limburgerhof, DE;
Eckhard Ströfer, Mannheim, DE;
Markus Weber, Ludwigshafen, DE;
Bernd Gerber, Ludwigshafen, DE;
Bernd Rumpf, Hockenheim, DE;
Bernd Sachweh, Meckenheim, DE;
Steffen Kerth, Ludwigshafen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of said column.