Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11073630 | Attenuating tool borne noise acquired in a downhole sonic tool measurement | Robert Hughes Jones, Can Evren Yarman | 2021-07-27 |
| 10585202 | Acoustic sensing with azimuthally distributed transmitters and receivers | Naoki Sakiyama, Wataru Izuhara, Hiroshi Hori | 2020-03-10 |
| 10364664 | Downhole acoustic mapping | Hiroshi Hori, Wataru Izuhara, Naoki Sakiyama, Hiroshi Nakajima, Shin'ichi Houshuyama +1 more | 2019-07-30 |
| 9927541 | Apparatus for monopole and multipole sonic logging of a downhole formation | Toshihiro Kinoshita, Naoki Sakiyama, Hitoshi Sugiyama, Yuichiro WADA, Akito SHIGEKANE | 2018-03-27 |
| 8979505 | Sensor system for a positive displacement pump | Jean-Louis Pessin, Joe Hubenschmidt, Erik Rhein-Knudsen, Nathan St. Michel | 2015-03-17 |
| 8506262 | Methods of use for a positive displacement pump having an externally assisted valve | Edward Leugemors, Rajesh Luharuka, Philippe Gambier, Jean-Louis Pessin, Aparna Raman | 2013-08-13 |
| 8366408 | Externally assisted valve for a positive displacement pump | Philippe Gambier, Jean-Louis Pessin, Rajesh Luharuka | 2013-02-05 |
| 8366402 | System and method for determining onset of failure modes in a positive displacement pump | Nathan St. Michel, Joe Hubenschmidt, Jean-Louis Pessin | 2013-02-05 |
| 8317498 | Valve-seat interface architecture | Philippe Gambier, Jean-Louis Pessin | 2012-11-27 |
| 8294589 | Real time radioactive training | Tim Smith, Arturo E. Altamirano | 2012-10-23 |
| 7643945 | Technique for acoustic data analysis | Nikolay Baklanov, Sarmad Adnan | 2010-01-05 |
| 7401500 | Positive displacement pump monitor | Jean-Louis Pessin, Nathan St. Michel | 2008-07-22 |