Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818111 | Measurement sensor for determining an oxygen concentration in a gas mixture | Walter Strassner, Johann Riegel, Lothar Diehl | 2004-11-16 |
| 6811664 | Electrochemical sensor element | Harry Braun, Walter Strassner, Lothar Diehl | 2004-11-02 |
| 6301951 | Method of controlling a sensor for determining an oxygen concentration in a gas mixture | Lothar Diehl, Jurgen Schwarz | 2001-10-16 |
| 6270639 | Electrochemical sensor | Olaf Jach, Harald Neumann, Walter Strassner, Johann Riegel, Lothar Diehl | 2001-08-07 |
| 5562811 | Device for temperature measurement at an oxygen probe | — | 1996-10-08 |
| 5360266 | Control and analysis circuit device for measuring reaction heat | Johann Riegel | 1994-11-01 |
| 4658772 | System for controlling the temperature of a hot spot or a glow plug in an internal combustion engine | Werner Auth, Johannes Locher, Hans Peter, Hannes Pflug, Michel Friedbert +1 more | 1987-04-21 |