Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345847 | Downhole logging using symmetric and asymmetric compensated resistivity measurements | Thomas Kruspe, Sushant Dutta, Andreas Hartmann, Holger Thern | 2025-07-01 |
| 12297734 | Downhole bar antenna with distributed windings | Jens Behnsen, Andreas Hartmann, Sven-Hendrik Lampe, Nikolay N. Velker, David Sergeevich Vlasov +1 more | 2025-05-13 |
| 10042076 | Resistivity imaging using combination capacitive and inductive sensors | Matthias Gorek, Eduard Kirchmeier | 2018-08-07 |
| 8390295 | Method and apparatus for focusing in resistivity measurement tools using independent electrical sources | Matthias Gorek, Christian Fulda | 2013-03-05 |
| 8258790 | Oscillator sensor for determining a property of an earth formation | Matthias Gorek, Eduard Kirchmeier | 2012-09-04 |
| 7679368 | Reflection coefficient measurement for water-based mud resistivity imaging | — | 2010-03-16 |
| 7256582 | Method and apparatus for improved current focusing in galvanic resistivity measurement tools for wireline and measurement-while-drilling applications | Matthias Gorek, Christian Fulda | 2007-08-14 |
| 7141981 | Error correction and calibration of a deep reading propagation resistivity tool | Tsili Wang | 2006-11-28 |
| 6957708 | Electrical imaging in conductive and non-conductive mud | Roland E. Chemali, Tsili Wang, Rene Ritter | 2005-10-25 |