Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385390 | Permanent well monitoring with acoustically transparent plugs | Duncan Groves, John-Peter van Zelm | 2025-08-12 |
| 11788403 | Detection of a barrier behind a wellbore casing | Knut Inge Dahlberg | 2023-10-17 |
| 11542814 | Telemetry system combining two telemetry methods | John D. Macpherson, Lei Fang, John-Peter van Zelm, Volker Peters, Andreas Peter | 2023-01-03 |
| 9638830 | Optimizing drilling operations using petrotechnical data | Joerg Meyer, Annabelle Kania, Mark Egan | 2017-05-02 |
| 9335435 | System and method for improving surface electromagnetic surveys | James Brady, John P. Horkowitz, Jean Seydoux, Jacques R. Tabanou, Jian Yang +1 more | 2016-05-10 |
| 8892362 | System and method for improving surface electromagnetic surveys | James Brady, John P. Horkowitz, Jean Seydoux, Jacques R. Tabanou, Jian Yang +1 more | 2014-11-18 |
| 8791832 | Apparatus, system, and method for communicating while logging with wired drill pipe | Goke Akinniranye, Benjamin Peter Jeffryes | 2014-07-29 |
| 8532928 | System and method for improving surface electromagnetic surveys | Jacques R. Tabanou, David Alumbaugh, James Brady, John P. Horkowitz, Jean Seydoux +1 more | 2013-09-10 |
| 8462013 | Apparatus, system, and method for communicating while logging with wired drill pipe | Goke Akinniranye, Benjamin Peter Jeffryes | 2013-06-11 |
| 7894300 | Fluid characterization from acoustic logging data | Lucian Johnston, David Johnson, Takeshi Endo, Henri-Pierre Valero | 2011-02-22 |
| 7251566 | Pump off measurements for quality control and wellbore stability prediction | Peter Wu, Tom R. Bratton, Bikash K. Sinha | 2007-07-31 |
| 6912465 | System and method for determining downhole clock drift | Anthony Collins, Cengiz Esmersoy | 2005-06-28 |