Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902492 | Novel spinning method | Gerd Collin, Manfred Meinbreckse, Gerhard Wilhelm | 1990-02-20 |
| 4882139 | Improved production of carbon fibers | Siegfried Peter | 1989-11-21 |
| 4871443 | Novel method for extraction of salts from coal tar and pitches | Arnold Alscher, Rudolf Oberkobusch, Siegfried Peter, Wolfgang Jaumann | 1989-10-03 |
| 4827050 | Method for separation of phenols and bases from coal tar oils by extraction | Siegfried Peter, Marc Seekamp, Jurgen Stadelhofer | 1989-05-02 |
| 4806228 | Process for producing pitch raw materials | Siegfried Peter | 1989-02-21 |
| 4756818 | A method for the production of a carbon fiber precursor | Siegfried Peter, Franz D. Oeste, Wolfgang Fexer, Wolfgang Jaumann, Manfred Meinbreckse +1 more | 1988-07-12 |
| 4598138 | Stable, phenolic modified hydrocarbon resins for leucopigments | Wolfgang Lucke, Peter Staglich | 1986-07-01 |
| 4539388 | Acid-modified, aromatic hydrocarbon resins and method for their production | Wolfgang Luecke, Bodo Friedrich | 1985-09-03 |
| 4471106 | Phenol-modified hydrocarbon resins with a high OH-number, method for the preparation thereof | Wolfgang Luecke, Peter Staeglich, Manfred Muehlenkamp | 1984-09-11 |