Issued Patents All Time
Showing 1–25 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637248 | Method for operating an internal combustion engine by determining and counteracting a pre-ignition state | Claus Naegele | 2009-12-29 |
| 7603983 | Carburetor and method of operating the same | Andreas Bähner, Andreas Lingen, Claus Naegele | 2009-10-20 |
| 7493889 | Method for controlling the composition of a fuel/air mixture for an internal combustion engine | Claus Naegele | 2009-02-24 |
| 7441518 | Internal combustion engine and method of operating same | Claus Naegele | 2008-10-28 |
| 7424879 | Portable handheld work apparatus | Patrick Schlauch, Jens Kern, Helmut Zimmermann, Claus-Peter Hamisch, Reiner Kuppert | 2008-09-16 |
| 7363910 | Ignition circuit having a high-energy spark for an internal combustion engine | Eberhard Schieber, Heinrich Leufen, Mohamed Abou-Aly, Heiko Rosskamp, Jorg Schlossarczyk | 2008-04-29 |
| 7325528 | Method of operating a single cylinder two-stroke engine | Eberhard Schieber, Heinrich Leufen, Mohamed Abou-Aly, Heiko Rosskamp, Jorg Schlossarczyk +1 more | 2008-02-05 |
| 7269904 | Portable handheld work apparatus | Roland Schmidt, Manfred Rabis, Antonio Fattorusso, Patrick Schlauch, Olaf Schmidt | 2007-09-18 |
| 7171942 | Protective engine speed control for a centrifugal clutch | — | 2007-02-06 |
| 7140352 | Method for controlling an electromagnetic valve in a fuel system | Claus Naegele | 2006-11-28 |
| 7126449 | Electromagnetic valve | Claus Naegele | 2006-10-24 |
| 7013936 | Device for decanting a liquid | Harald Schliemann | 2006-03-21 |
| 6976472 | Ignition circuit for an internal combustion engine | — | 2005-12-20 |
| 6932058 | Carburetor arrangement for an internal combustion engine | Claus Naegele | 2005-08-23 |
| 6755395 | Carburetion arrangement for an internal combustion engine of a manually guided implement | — | 2004-06-29 |
| 6684998 | Centrifugal clutch | — | 2004-02-03 |
| 6679211 | Manually guided implement | — | 2004-01-20 |
| 6679762 | Recession control via thermal expansion coefficient differences in recording heads during lapping | Joseph J. Fatula, Jr. | 2004-01-20 |
| 6659432 | Carburetor arrangement | — | 2003-12-09 |
| 6571756 | Two-cycle engine with a stratified charge | Heiko Rosskamp, Axel Klimmek, Thomas Stark, Peter Pretzsch | 2003-06-03 |
| 6314922 | Hand-held working tool | Helmut Zimmermann, Werner Geyer, Jorg Schlossarczyk, Harald Schliemann, Gunter Stein +3 more | 2001-11-13 |
| 6256890 | Mounting mechanism for an adjustable component that is to be held | Harald Schliemann, Manfred Rabis | 2001-07-10 |
| 6173741 | Pressure compensating valve for a fuel tank | — | 2001-01-16 |
| 6135428 | Diaphragm carburetor for an internal combustion engine with a manual starter | Harald Schliemann | 2000-10-24 |
| 6116271 | Venting valve for a fuel tank | — | 2000-09-12 |