Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11499420 | Oscillating shear valve for mud pulse telemetry and operation thereof | Volker Peters, Heiko Eggers, Heige Brand | 2022-11-15 |
| 9809389 | Force measuring unit and system for measuring chain forces | Simon Pauli, Stefan Kratochvil, Christian Hauck, Mirko Skowron, Marco Ahler +2 more | 2017-11-07 |
| 9156621 | Face conveyor for extraction plants and trough element for said face conveyor | Hendrik Padberg, Jens Steinberg, Gerhard Siepenkort, Jorg Wirtz, Joachim Raschka | 2015-10-13 |
| 9109445 | Shield canopy for a shield-type support | Dennis Dehmel, Stefan Hengstler | 2015-08-18 |
| 8998343 | Method for determining the position or location of plant components in mining extracting plants and extracting plant | Marco Ahler, Sascha Stelter, Andreas Westphalen, Stefan Hengstler, Simon Pauli +1 more | 2015-04-07 |
| 8215876 | Shield cap for a shield-type mining support | Siamak Onsori, Stefan Hengstler, Sebastian Mundry, Detlev Lettau | 2012-07-10 |
| 8174404 | Downlink pulser for mud pulse telemetry | Volker Peters, Cedric Rouatbi, Heiko Eggers | 2012-05-08 |
| 8011450 | Active bottomhole pressure control with liner drilling and completion systems | Sven Krueger, Gerald Heisig, Volker Krueger, Peter Aronstam, Harald Grimmer +2 more | 2011-09-06 |
| 7808859 | Oscillating shear valve for mud pulse telemetry | Volker Peters, Cedric Rouatbi, Heiko Eggers | 2010-10-05 |
| 7779984 | Arrangement for extracting extraction products in underground extraction operations in caving | Harry Martin, Juan Delgado, Victor Raúl Encina Montenegro, Pablo Antonio Letelier Parga, Jaime Hernán Carreño Valdés +6 more | 2010-08-24 |
| 7417920 | Reciprocating pulser for mud pulse telemetry | Volker Peters, Cedric Rouatbi, Eckard Scholz | 2008-08-26 |
| 7350874 | Method and device for extracting extraction products in underground mining | Reinhold Brüggemann, Frank Fischer, Jochen Hammel, Jorg Wirtz, Norbert Katthöfer +8 more | 2008-04-01 |
| 7280432 | Oscillating shear valve for mud pulse telemetry | Volker Peters, Cedric Rouatbi, Heiko Eggers | 2007-10-09 |
| 7250873 | Downlink pulser for mud pulse telemetry | Volker Peters, Cedric Rouatbi, Heiko Eggers | 2007-07-31 |
| 6975244 | Oscillating shear valve for mud pulse telemetry and associated methods of use | Volker Peters, Cedric Rouatbi, Heiko Eggers | 2005-12-13 |
| 6898150 | Hydraulically balanced reciprocating pulser valve for mud pulse telemetry | Volker Peters, Cedric Rouatbi | 2005-05-24 |
| 6872025 | Toggle retainer for toggle connections | Frank Fischer, Gerhard Merten, Ingo Pruss, Siegfried Schmidt, Jorg Wirtz | 2005-03-29 |
| 6626253 | Oscillating shear valve for mud pulse telemetry | Volker Peters, Cedric Rouatbi | 2003-09-30 |
| 6419033 | Apparatus and method for simultaneous drilling and casing wellbores | Friedhelm Makohl | 2002-07-16 |
| 6196336 | Method and apparatus for drilling boreholes in earth formations (drilling liner systems) | Roger Fincher, Larry Watkins, Friedhelm Makohl | 2001-03-06 |
| 6186597 | Pick system for mining ploughs, in particular coal ploughs | Peter Wollenhaupt, Ernst Heiderich, Georg Marker, Peter Richter, Wolfgang Wald +1 more | 2001-02-13 |
| 5287955 | Connections for inter-connecting the pans of scraper-chain conveyors | Bernd Steinkuhl | 1994-02-22 |
| 5224582 | Channel sections for scraper-chain conveyors | Bernd Steinkuhl | 1993-07-06 |
| 5156258 | Scraper-chain conveyors for use in mineral mining | Bernd Steinkuhl | 1992-10-20 |