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. 02, 2012
Filed:
Jan. 26, 2012
Christian Werner, Hannover, DE;
Christoph Steinberg, Garbsen, DE;
Jessica Maurer, Wunstorf, DE;
Harry Zumaque, Cologne, DE;
Christian Werner, Hannover, DE;
Christoph Steinberg, Garbsen, DE;
Jessica Maurer, Wunstorf, DE;
Harry Zumaque, Cologne, DE;
Honeywell International, Morristown, NJ (US);
Abstract
Provided herein are methods for the preparation of high purity stannous oxide comprising: (a) reacting a Sn salt with a Cdicarboxylic acid in the aqueous phase to form a suspension comprising a Sn-dicarboxylate complex; (b) washing the Sn-dicarboxylate complex with water to obtain a wash solution comprising a washed Sn-dicarboxylate complex essentially free of the anion of the Sn salt; and (c) reacting the washed Sn-dicarboxylate complex with a base to form high purity SnO, wherein the high purity SnO has an alpha radiation count of less than about 0.002 cph/cm.