Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4584076 | Process for obtaining lignin from alkaline solutions thereof | Josef Feckl, Clemens Grambow, Albert Huber, Dietrich Wabner | 1986-04-22 |
| 4496426 | Process for the continuous extraction of vegetable-fiber material in two stages | Manfred Baumeister | 1985-01-29 |