Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9359888 | Method and apparatus for transmitting or receiving information between a downhole equipment and surface | Erwann Lemenager, Martin G. Luling, Christian Chouzenoux | 2016-06-07 |
| 8789620 | Method and apparatus for transmitting or receiving information between downhole equipment and surface | Erwan Lemenager, Martin G. Luling, Christian Chouzenoux | 2014-07-29 |
| 8773278 | Apparatus for receiving and transmitting signals in electromagnetic telemetry system used in a wellbore | Matthe Contant, Erwann Lemenager, Juergen J. Zach | 2014-07-08 |
| 8711045 | Downhole telemetry system | Matthe Contant, Erwann Lemenager, Sylvain Chambon | 2014-04-29 |
| 4347603 | System for exchanging encoded messages between stations | Jean-Baptiste Jacob, Michel Ruvoen | 1982-08-31 |