Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7641807 | Direct process for the manufacture of tetraalkylammonium tetrafluoroborate-containing electrolyte compositions | Alfred Siggel, Michael Fooken, Christian Liepelt | 2010-01-05 |
| 7601871 | Method for purifying quaternary onium salts | Alfred Siggel, Michael Fooken, Andreas Kanschik-Conradsen, Sonja Demel, Frank Nerenz | 2009-10-13 |