Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6840992 | Coatings for inkjet media | Astrid Mueller | 2005-01-11 |
| 6224660 | Ink mixture | Andreas Stubbe, Wolfgang Lortz, Thomas Gobel | 2001-05-01 |
| 6207721 | Aluminum silicate suspension | Jurgen Schubert | 2001-03-27 |
| 5227022 | Process for increasing pulp brightness with zeolites and easily decomposable organic chelating agents | Wolfgang Leonhardt, Kurt Schmidt, Hans U. Suess | 1993-07-13 |