Patents Represented by Attorney Novak Drucen Quigg

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  • Method for the production of a salt-free aqueous hydroxylamine solution
    Patent number: 6942762
    Abstract: A process for preparing a salt-free aqueous hydroxylamine solution by distilling an aqueous solution of a hydroxylammonium salt and a base in a tray column having at least two mechanical trays, wherein random or structured packings are located above at least one tray of the tray column over the cross section of the column.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: September 13, 2005
    Assignee: BASF Akteingesellschaft
    Inventors: Karl-Heinz Wostbrock, Joachim Thiel, Heinz Krüger, Eckhard Ströfer, Markus Weber, Bernd Gerber, Bernd Rumpf, Bernd Sachweh, Steffen Kerth