Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8226923 | Method for production of ammonium paratungstate tetrahydrate and highly pure ammonium paratungstate tetrahydrate | Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse | 2012-07-24 |
| 8168155 | Method for production of ammonium paratungstate tetrahydrate and highly pure ammonium paratungstate tetrahydrate | Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse | 2012-05-01 |
| 7799184 | Process for the electrochemical decomposition of powders and electrolysis cells suitable therefor | Armin Olbrich, Juliane Meese-Marktscheffel, Gerhard Gille, Viktor Stoller | 2010-09-21 |
| 7144493 | Process for the electrochemical decomposition of powders and electrolysis cells suitable therefor | Armin Olbrich, Juliane Meese-Marktscheffel, Gerhard Gille, Viktor Stoller | 2006-12-05 |
| 6936090 | Process for isolating rhenium | Juliane Meese-Marktscheffel, Viktor Stoller, Armin Olbrich, Michael Erb | 2005-08-30 |
| 6709641 | Method for extracting anions | Wilfried Gutknecht | 2004-03-23 |
| 6113868 | Process for treating tungstate solutions to reduce molybdenum impurity and other impurity content | Wilfried Gutknecht | 2000-09-05 |
| 5891407 | Process for producing pure ammonium metallates | Wilfried Gutknecht | 1999-04-06 |
| 5676817 | Process for the production of pure solutions of tungsten and molybdenum | Wilfried Gutknecht | 1997-10-14 |