Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7641765 | Method for production of coated paper with extreme whiteness | Friedrich Linhart, Stephan Frenzel | 2010-01-05 |
| 6969444 | Paper coating slip containing n-vinylformamide | Friedrich Linhart, Bernd Dirks, Heinrich Ullrich, Norbert Mahr, Stefan Frenzel +1 more | 2005-11-29 |