Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8585349 | Turbine for driving a generator in a drill string | — | 2013-11-19 |
| 8109721 | Bearing arrangement for a turbine rotor of a drill string turbine | Uwe Draeger | 2012-02-07 |
| 8092147 | Turbine for power generation in a drill string | Uwe Draeger | 2012-01-10 |
| 8042572 | Controllable pressure-reducing valve and device for the generation of pressure change signals | Uwe Draeger | 2011-10-25 |
| 6864593 | Device for producing of electric energy and of signal transmitting pressure pulses | Uwe Drager | 2005-03-08 |
| 6850463 | Borehole logging apparatus for deep well drilling | — | 2005-02-01 |
| 6636159 | Borehole logging apparatus for deep well drillings with a device for transmitting borehole measurement data | — | 2003-10-21 |
| 5182731 | Well bore data transmission apparatus | Hans-Juergen Hoelscher, Thomas Kerk, Wilfried Tuennermann | 1993-01-26 |
| 4745276 | Device for the detection of fluorescent substances on the surface of the earth | Heribert F. Broicher, Erich Kirsch, Friedhart Knolle, Arthur Zydek | 1988-05-17 |
| 4580049 | Probe for locating mineral deposits | Klaus Janssen, Klaus Johnen | 1986-04-01 |
| 4184758 | Deep sea underwater camera | — | 1980-01-22 |