Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902492 | Novel spinning method | Herbert Beneke, Manfred Meinbreckse, Gerhard Wilhelm | 1990-02-20 |
| 4795847 | Preparation of 2,6-dialkyl-naphthalenes | Jens Weitkamp, Marita Neuber, Wilhelm Holtmann, Hans Spengler | 1989-01-03 |
| 4430175 | Process for the electrochemical conversion of coal and use of the reaction products | Gerhard Kreysa | 1984-02-07 |
| 4414192 | Method of producing a highly reactive pitch fraction and its usage | Jurgen Palm, Herbert Glaser, Rolf Marrett, Maximilian Zander | 1983-11-08 |
| 4379133 | Process for anisotropic carbon production | Maximilian Zander, Gerd-Peter Blumer, Herbert Glaser, Rolf Marrett | 1983-04-05 |
| 4377040 | Process for the modification of wood | Eberhard Giebeler, Bernhard Bluhm, Arnold Alscher, Klaus Moraw, Heinzpeter Nilles | 1983-03-22 |
| 4357472 | Process for the production of thionaphthene from thionaphthene sulfonic acid | Georg Grigoleit, Kurt Matern, Helmut Kohler | 1982-11-02 |
| 4304606 | Plasticized coal tar pitch, composition containing same and its use | Heinrich Louis, Helmut Kohler, Rudolf Oberkobusch, Volker Potschka | 1981-12-08 |
| 4259171 | Process for the separation of quinoline-insoluble components from coal tar pitch | Jurgen Stadelhofer | 1981-03-31 |