Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8613801 | Sinterable semi-coke powder with high bulk density | Rainer Gadow, Frank Kern, Matthias Levering, Claudia Boltersdorf | 2013-12-24 |
| 7772145 | Manufacture of environmentally friendly carbon-bonded refractory product in the cold mixing process | Christos Aneziris, Dmitry Borzov, Christoph Jacob, Jens Stiegert, Dirk Schnitzler +1 more | 2010-08-10 |
| 5283045 | Sinterable carbon powder and method of its production | Hans-Dieter Behrens, Andreas Niehoff, Hans Spengler | 1994-02-01 |
| 5262043 | Coal tar pitch and the preparation and use thereof | Hans-Dieter Behrens, Hans Spengler | 1993-11-16 |
| 4943365 | Method for the production of modified pitches and the further application | Maximilian Zander, Jurgen Stadelhofer | 1990-07-24 |