Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6266989 | Method and machine for straightening sections | Manfred Riffelmann | 2001-07-31 |
| 5429283 | Immersion nozzle formed of separate members | Ernst Luhrsen, Karl Baum, Erich Galle | 1995-07-04 |
| 5303905 | Refractory ceramic stopper, apparatus for support thereof, and assembly thereof | Dirk Masurat, Ernst Luhrsen, Gerd Bohndorf | 1994-04-19 |
| 4923225 | Assembly for connecting a metal member to a ceramic refractory member | Ernst Luhrsen, Albert Ott, Wilhelm Parbel, Karl Baum | 1990-05-08 |
| 4860344 | Circuit arrangement for telecommunications switching systems, particularly telephone switching systems, etc. | Herbert Jans, Klaus Brandmaier | 1989-08-22 |
| 4802205 | Circuit arrangement for telecommunications switching systems, particularly for telephone switching systems comprising information-processing sequential logic systems and traffic measuring devices | Michael Eder, Klaus Leutner | 1989-01-31 |
| 4708196 | Shaft cooler for the dry quenching of coke | Jurgen Tietze, Wilhelm Danguillier, Heinz Thubeaville, Friedrich Muller | 1987-11-24 |
| 4634685 | Refractory article suitable for casting molten metal | Ernst Luhrsen, Peter Jeschke, Ortwin Rave, Martin Kienow, Werner Richter | 1987-01-06 |
| 4508324 | Fastening means for a closure plate on a sliding shutter outlet in a vessel which contains molten metal | Ernst Luhrsen, Jurgen Plath | 1985-04-02 |
| 4372754 | Ignition system for coal gasifier | Paul Gernhardt, Wilhelm Danguillier, Karl Peter, Wolfgang Grams, Peter B. Schnitzler | 1983-02-08 |
| 4188915 | Water-cooled, high-temperature gasifier | Joachim Kummel, Heinz Dressen, Wilhelm Danguillier, Paul Gernhardt, Wolfgang Grams | 1980-02-19 |