Issued Patents All Time
Showing 51–74 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5030602 | Stable ceramic consisting of aluminum oxide | Thomas Frey, Heinz Geier | 1991-07-09 |
| 4963112 | Method of production of a spark plug for internal combustion engines | Walter Benedikt, Werner Herden, Dietrich Schuldt, Leo Steinke | 1990-10-16 |
| 4939409 | Spark plug with a surface discharge section | Werner Grunwald, Kurt Schmid | 1990-07-03 |
| 4798991 | Surface-gap spark plug for internal combustion engines | Walter Benedikt, Gerhard Heess, Werner Herden, Helmut Reum, Jurgen Schmatz +1 more | 1989-01-17 |
| 4539503 | Rapid-heating, high-temperature-stable spark plug for internal combustion engines | Friedrich Esper, Walter Gohl, Peter Sternad | 1985-09-03 |
| 4532492 | Temperature-compensated, oxygen-content gas sensor | Friedrich Esper, Hermann Fischer, Peter Scharner | 1985-07-30 |
| 4406968 | Sparkplug for internal combustion engine | Rudolf Pollner | 1983-09-27 |
| 4393282 | Electrode for ignition systems | Werner Grunwald, Ernst Zehender, Jurgen Schmatz, Hans Neu, Kuno Kirner +1 more | 1983-07-12 |
| 4356628 | Method to render accessible an electrical contact region of a composite element | Klaus Muller, Gerhard Holfelder | 1982-11-02 |
| 4354912 | Solid electrochemical sensor | — | 1982-10-19 |
| 4347113 | Oxygen content exhaust gas sensor, and method of its manufacture | Hermann Fischer, Hans-Ulrich Gruber, Wolfgang Heinemann, Gunter Knoll, Ernst Linder +5 more | 1982-08-31 |
| 4339320 | Heated gas composition sensor structure | Friedrich Esper | 1982-07-13 |
| 4334974 | Electrochemical oxygen sensor, particularly for use with exhaust gases of internal combustion engines, and especially for polarographic application | Klaus Muller, Helmut Maurer, Ernst Linder, Franz Rieger, Harald Reber +4 more | 1982-06-15 |
| 4305803 | Gas sensor construction, particularly to determine oxygen content combustion exhaust gases, particularly from internal combustion engines | Barbara Beyer, Hermann Dietz | 1981-12-15 |
| 4296148 | Method to apply multiple layers, including an electrode layer, on a sintered or pre-sintered ion conductive solid electrolyte body | — | 1981-10-20 |
| 4292158 | Oxygen sensor of the polarographic type, particularly for use with internal combustion engines | Klaus Muller, Helmut Maurer, Hermann Dietz, Wolfgang Leibfried, Gunther Stecher +1 more | 1981-09-29 |
| 4283261 | Electrochemical sensor structure to determine oxygen content in combustion exhaust gases | Helmut Maurer, Klaus Muller, Franz Rieger, Ernst Linder, Hermann Dietz +1 more | 1981-08-11 |
| 4283441 | Method of making an ion conductive gas sensor body with a cermet electrode thereon | Wolf-Dieter Haecker | 1981-08-11 |
| 4282080 | Electrochemical sensor, particularly for oxygen determination in combustion gases | Klaus Muller, Ernst Linder, Helmut Mauer, Franz Rieger, Heinz Geier | 1981-08-04 |
| 4280890 | Electrochemical sensor for oxygen concentration determination in gases and method of making the same | Wolf-Dieter Haecker, Burkhard Pfeiffer | 1981-07-28 |
| 4276142 | Electrochemical sensor, particularly for internal combustion engine exhaust gas composition determination, and method of its manufacture | Bernhard Topp, Wolf-Dieter Haecker | 1981-06-30 |
| 4265724 | Electrochemical sensor, particularly oxygen sensor to determine exhaust gas composition from automotive internal combustion engines | Wolf-Dieter Haecker, Bernhard Topp | 1981-05-05 |
| 4221650 | Solid electrolyte oxygen sensors | Friedrich Esper, Heinz Geier | 1980-09-09 |
| 4183798 | Stabilized zirconium dioxide compositions and oxygen sensors utilizing said compositions | Friedrich Esper | 1980-01-15 |