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. 13, 2009
Filed:
Mar. 03, 2006
Alfred Siggel, Seelze, DE;
Michael Fooken, Seelze, DE;
Michael Theissen, Hanover, DE;
Andreas Kanschik-conradsen, Garbsen, DE;
Sonja Demel, Wunstorf, DE;
Frank Nerenz, Hannover, DE;
Alfred Siggel, Seelze, DE;
Michael Fooken, Seelze, DE;
Michael Theissen, Hanover, DE;
Andreas Kanschik-Conradsen, Garbsen, DE;
Sonja Demel, Wunstorf, DE;
Frank Nerenz, Hannover, DE;
Honeywell International Inc., Morristown, NJ (US);
Abstract
Provided are methods of purifying quaternary onium salts having the steps of (a) providing an quaternary onium salt solution having a first ionic impurity concentration; (b) providing an ion exchange material charged with electrochemically stable anions; and (c) contacting the salt solution with the ion exchange material to produce an quaternary onium salt solution having a second halide concentration is less than the first ionic impurity concentration.