Ammonium paratungstate hydrates and ammonium paratungstate decahydrate

US8440161B2 · kind B2 · utility

Assignee

• H.C. STARCK INC. · US

Inventors

• Viktor Stoller · Bad Harzburg, DE
• Michael Erb · Salzgitter, DE
• Juliane Meese-Marktscheffel · Goslar, DE
• Michael Lohse · Goslar, DE
• Klaus-Jürgen Marschall · Goslar, DE
• Frank Schrumpf · Goslar, DE

Key dates

• Filing date: May 29, 2012
• Grant date: May 14, 2013
• Expiry date: May 29, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention is directed to ammonium paratungstate decahydrate containing at least 75% of crystals having a length of at least 200 μm and having a ratio of length to width of less than 4.5:1.