Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4283441 | Method of making an ion conductive gas sensor body with a cermet electrode thereon | Karl-Hermann Friese | 1981-08-11 |
| 4280890 | Electrochemical sensor for oxygen concentration determination in gases and method of making the same | Karl-Hermann Friese, Burkhard Pfeiffer | 1981-07-28 |
| 4276142 | Electrochemical sensor, particularly for internal combustion engine exhaust gas composition determination, and method of its manufacture | Bernhard Topp, Karl-Hermann Friese | 1981-06-30 |
| 4265724 | Electrochemical sensor, particularly oxygen sensor to determine exhaust gas composition from automotive internal combustion engines | Karl-Hermann Friese, Bernhard Topp | 1981-05-05 |