Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9175598 | Two-stroke engine, sand core for producing a two-stroke engine, and method for operating a two-stroke engine | Werner Geyer | 2015-11-03 |
| 8136499 | Cover arrangement for a hand-held power tool | Johannes Menzel, Kai-Ulrich Machens, Bernd Andress | 2012-03-20 |
| 7363910 | Ignition circuit having a high-energy spark for an internal combustion engine | Eberhard Schieber, Heinrich Leufen, Mohamed Abou-Aly, Hans Nickel, Heiko Rosskamp | 2008-04-29 |
| 7325528 | Method of operating a single cylinder two-stroke engine | Eberhard Schieber, Heinrich Leufen, Mohamed Abou-Aly, Hans Nickel, Heiko Rosskamp +1 more | 2008-02-05 |
| 7210432 | Internal combustion engine | Heiko Rosskamp, Konrad Knaus, Gerhard Osburg | 2007-05-01 |
| 7168132 | Portable handheld work apparatus having thumb supports | Bernhard Durr, Michael Tinius, Gunter Wolf, Martin Schif, Werner Geyer +2 more | 2007-01-30 |
| 7131406 | Two-cycle engine having scavenging | Bernhard Durr, Harald Schliemann, Werner Geyer | 2006-11-07 |
| 7066120 | Two-cycle engine | Werner Geyer, Claus Fleig, Helmar Amend, Klaus-Martin Uhl | 2006-06-27 |
| 6955043 | Muffler assembly | Georg Maier, Tommy Roitsch | 2005-10-18 |
| 6953011 | Two-cycle engine | Werner Geyer, Claus Fleig | 2005-10-11 |
| 6912979 | Method for operating a two-stroke engine having mixture induction | Claus Fleig, Werner Geyer | 2005-07-05 |
| 6910550 | Muffler arrangement for an internal combustion engine | Uwe Janoske, Johannes Menzel, Markus Keller | 2005-06-28 |
| 6895910 | Two-cycle engine having scavenging | Werner Geyer, Claus Fleig | 2005-05-24 |
| 6880515 | Portable hand-guided work apparatus | Werner Geyer, Claus Fleig, Bernd Knodler | 2005-04-19 |
| 6874455 | Two-cycle engine | Werner Geyer, Claus Fleig | 2005-04-05 |
| 6857402 | Two-stroke engine | Werner Geyer | 2005-02-22 |
| 6851403 | Valve drive having a rocker arm | Bernhard Durr, Bruhns Imke, Jurgen Haberlein, Harald Schliemann, Manfred Rabis | 2005-02-08 |
| 6848398 | Two-cycle engine | Olaf Schmidt | 2005-02-01 |
| 6842979 | Method of producing a cylinder in a two-cycle engine | Igor Klaric, Ralf Blechschmidt, Andreas Bähner, Matthias Hehnke, Christian Brüning +4 more | 2005-01-18 |
| 6769396 | Diaphragm carburetor | Werner Geyer, Claus Fleig, Bernd Knodler | 2004-08-03 |
| 6736240 | Lubrication mechanism for a cam drive | Bernhard Durr, Harald Schliemann, Manfred Rabis | 2004-05-18 |
| 6715212 | Portable handheld work apparatus | Bernhard Durr, Harald Schliemann, Manfred Rabis | 2004-04-06 |
| 6681726 | Intake system for the combustion air of an internal combustion engine in a portable handheld work apparatus | Peter Linsbauer, Uwe Janoske | 2004-01-27 |
| 6494180 | Implement having speed regulation | — | 2002-12-17 |
| 6314922 | Hand-held working tool | Helmut Zimmermann, Werner Geyer, Hans Nickel, Harald Schliemann, Gunter Stein +3 more | 2001-11-13 |