Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11725338 | Method for producing bleached wood fibre material | Stefan Erren, Dieter Schönhaber, Pavel Vassilievitch Osipov | 2023-08-15 |
| 11015290 | Method for producing bleached wood fibre material | Stefan Erren, Dieter Schönhaber, Pavel Vassilievitch Osipov | 2021-05-25 |
| 9121135 | Use of sodium dithionite in pulping | Stefan Erren, Dieter Schönhaber | 2015-09-01 |
| 8592002 | Method for the production of single-and/or multiple-coated substrates | Erich Krumbacher, Norbert Willenbacher, Oliver Birkert, Christoph Hamers, Martin Tietz +1 more | 2013-11-26 |