Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10320019 | Process for producing a solid oxide fuel cell by depositing an electrically conductive and gas permeable layer on a porous support substrate | Karl Kailer, Georg Kunschert, Stefan Schlichtherle | 2019-06-11 |
| 7320226 | Freezer with defrost function and method for operating the freezer | — | 2008-01-22 |
| 6667673 | Dual-mode surface wave filter with enhanced symmetry and optionally enhanced stop-band attenuation | — | 2003-12-23 |
| 6353372 | Dual-mode surface acoustic wave filter with split input/output converters determining impedance | Thomas Baier | 2002-03-05 |
| 6209332 | Circuit configuration for operating an electrically triggerable magnet valve and refrigeration appliance having the circuit configuration | — | 2001-04-03 |
| 6081172 | Surface wave filter for asymmetrical/symmetrical and symmetrical/symmetrical operating mode | Josef Bauregger | 2000-06-27 |
| 5889646 | Circuit configuration and method for triggering at least one electrically triggerable magnet | — | 1999-03-30 |
| 4508666 | Process for cooling and comminuting molten calcium carbide | Wilhelm F. Pietzarka, Albrecht Malten | 1985-04-02 |
| 4400292 | Process for making agents for desulfurizing crude iron or steel melts | Albert Braun, Willi Portz, Hans-Martin Delhey | 1983-08-23 |
| 4395282 | Desulfurization mixture and process for making it | Albert Braun, Willi Portz, Hans-Martin Delhey | 1983-07-26 |
| 4391786 | Production of calcium carbide | Hans-Joachim Kersting, Erhard Wolfrum, Willi Portz | 1983-07-05 |
| 4368071 | Process for the manufacture of desulfurizing agents for crude iron or steel melts | Albert Braun, Willi Portz, Hans-Martin Delhey | 1983-01-11 |
| 4358312 | Desulfurizing agent and process for its manufacture | Albert Braun, Willi Portz, Hans-Martin Delhey | 1982-11-09 |
| 4323392 | Agent for desulfurizing crude iron and steel melts, and process for making it | Albert Braun, Willi Portz | 1982-04-06 |
| 4318822 | Production of agent for desulfurizing crude iron and steel melts | Albert Braun, Willi Portz | 1982-03-09 |
| 4182626 | Production of granular compositions containing pulverulent magnesium | Wilhelm Portz, Albert Braun, Joachim Kandler, Klaus Komorniczyk, Hans-Dieter Thiel | 1980-01-08 |