Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871443 | Novel method for extraction of salts from coal tar and pitches | Herbert Beneke, Arnold Alscher, Rudolf Oberkobusch, Siegfried Peter | 1989-10-03 |
| 4756818 | A method for the production of a carbon fiber precursor | Siegfried Peter, Herbert Beneke, Franz D. Oeste, Wolfgang Fexer, Manfred Meinbreckse +1 more | 1988-07-12 |