Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879526 | Electrochemical measuring sensor for determining nitrogen oxides in gas mixtures | Werner Gruenwald | 1999-03-09 |
| 5849175 | Method and circuit arrangement for acutating a measuring sensor to determine an oxygen concentration in a gas mixture | Werner Gruenwald | 1998-12-15 |
| 5702580 | Measuring sensor for determining the oxygen content of gas mixtures | Werner Gruenwald, Claudio De La Prieta, Gert Lindemann, Ulrich Eisele, Carmen Schmiedel | 1997-12-30 |
| 5507174 | Polarographic sensor | Karl-Hermann Friese, Werner Gruenwald | 1996-04-16 |
| 5505837 | Sensor arrangement for determining gas components and/or gas concentrations of gas mixtures | Karl-Hermann Friese, Werner Gruenwald, Gerhard Hoetzel, Harald Neumann, Johann Riegel +1 more | 1996-04-09 |
| 5474665 | Measuring sensor for determining the oxygen content of gas mixtures | Karl-Hermann Friese, Hermann Fischer, Manfred Koeder, Werner Gruenwald, Ulrich Eisele | 1995-12-12 |
| 5310472 | Sensor element for limiting current sensors to determine the lambda value of gas mixtures | Werner Grunwald, Claudio De La Prieta | 1994-05-10 |
| 5302275 | Sensor element for an oxygen limiting current probe in order to determine the .lambda. value of gas mixtures | Barbara Beyer, Werner Gruenwald, Claudio Da La Prieta | 1994-04-12 |
| 4532013 | Method for monitoring operation of a current-limiting type gas sensor | Ferdinand Grob, Klaus Muller, Harald Reber | 1985-07-30 |
| 4419190 | Method and apparatus to measure the operating temperature of solid electrolyte-type gas sensors | Ferdinand Grob, Klaus Muller, Lothar Raff, Franz Rieger, Hans-Martin Wiedenmann | 1983-12-06 |
| 4419212 | Combination gas oxygen concentration and combustion light sensor | Gerhard Holfelder, Klaus Muller, Harald Reber | 1983-12-06 |
| 4356065 | Polarographic oxygen concentration sensor and method of determining oxygen content in the exhaust gases of an internal combustion engine | — | 1982-10-26 |
| 4355618 | Method and apparatus for obtaining a control variable for the closed-loop control of the fuel-air ratio in the operating mixture of internal combustion engines | Klaus Muller, Franz Rieger, Helmut Maurer, Ernst Linder, Harald Reber | 1982-10-26 |
| 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, Karl-Hermann Friese +4 more | 1982-06-15 |
| 4305803 | Gas sensor construction, particularly to determine oxygen content combustion exhaust gases, particularly from internal combustion engines | Barbara Beyer, Karl-Hermann Friese | 1981-12-15 |
| 4292158 | Oxygen sensor of the polarographic type, particularly for use with internal combustion engines | Klaus Muller, Helmut Maurer, Karl-Hermann Friese, 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, Karl-Hermann Friese +1 more | 1981-08-11 |