Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8594265 | Methods for controlling ion beam and target voltage in a neutron generator for improved performance | Luke T. Perkins, Wolfgang Ziegler, Robert A. Adolph | 2013-11-26 |
| 8546749 | Intrinsic radioactivity in a scintillator as count rate reference | Markus Berheide, James A. Grau, Bradley A. Roscoe | 2013-10-01 |
| 8536517 | Scintillator based radiation detection | Markus Berheide, James A. Grau, Bradley A. Roscoe, Christian Stoller, Matthieu Simon | 2013-09-17 |
| 8173953 | Gain stabilization of gamma-ray scintillation detector | Christian Stoller, Matthieu Simon | 2012-05-08 |
| 8143570 | Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation | John Edwards, Christian Stoller, Roger Griffiths, Nicolas Renoux | 2012-03-27 |
| 7991111 | High voltage x-ray generator and related oil well formation analysis apparatus and method | Arthur J. Becker, Joel L. Groves, Christian Stoller | 2011-08-02 |
| 7903782 | Apparatus and method for fluid phase fraction determination using x-rays optimized for wet gas | Joel L. Groves, Etienne Vallee | 2011-03-08 |
| 7817781 | High voltage X-ray generator and related oil well formation analysis | Arthur J. Becker, Joel L. Groves, Christian Stoller | 2010-10-19 |
| 7684540 | Apparatus and method for fluid phase fraction determination using x-rays | Joel L. Groves, Etienne Vallee | 2010-03-23 |
| 7669468 | Measuring mud flow velocity using pulsed neutrons | Roger Griffiths, Kenneth E. Stephenson | 2010-03-02 |
| 7668293 | High voltage x-ray generator and related oil well formation analysis apparatus and method | Arthur J. Becker, Joel L. Groves, Christian Stoller | 2010-02-23 |
| 7639781 | X-ray tool for an oilfield fluid | Rod Shampine, Joel L. Groves, Anthony Durkowski, Etienne Vallee | 2009-12-29 |
| 7634059 | Downhole imaging tool utilizing x-ray generator | — | 2009-12-15 |
| 7564948 | High voltage x-ray generator and related oil well formation analysis apparatus and method | Arthur J. Becker, Joel L. Groves, Christian Stoller | 2009-07-21 |
| 7542543 | Apparatus and method for well services fluid evaluation using x-rays | Rod Shampine, Joel L. Groves, Anthony Durkowski, Etienne Vallee | 2009-06-02 |
| 7507952 | Apparatus and method for fluid density determination | Joel L. Groves, Etienne Vallee | 2009-03-24 |
| 7500388 | Method and apparatus for in-situ side-wall core sample analysis | Go Fujisawa, Oliver C. Mullins, Joel L. Groves, Lennox Reid, Felix Chen +2 more | 2009-03-10 |
| 7432499 | Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation | John Edwards, Christian Stoller, Roger Griffiths, Nicolas Renoux | 2008-10-07 |
| 7365307 | Sigma/porosity tools with neutron monitors | Christian Stoller, Robert A. Adolph | 2008-04-29 |
| 6781115 | Subsurface radiation phenomena detection with combined and azimuthally sensitive detectors | Christian Stoller, Xavier Herve, Sunil N. Gulrajani, Verna L. Lomax, Dennis Pittman +1 more | 2004-08-24 |
| 6097786 | Method and apparatus for measuring multiphase flows | Joel L. Groves, Harold Pfutzner, Jean-Pierre Poyet | 2000-08-01 |
| 5912460 | Method for determining formation density and formation photo-electric factor with a multi-detector-gamma-ray tool | Christian Stoller, Urmi DasGupta, Olivier Philip, Nihal Wijeyesekera | 1999-06-15 |
| 5910654 | Apparatus and method for measuring formation density in rugose boreholes | Arthur J. Becker | 1999-06-08 |
| 5841135 | Method and apparatus for measuring formation density and the formation photo-electric factor with a multi-detector gamma-gamma tool | Christian Stoller, Nihal Wijeyesekera, Urmi DasGupta, Donald C. McKeon | 1998-11-24 |
| 5442173 | Method and system for real-time monitoring of earth formation fracture movement | — | 1995-08-15 |