Issued Patents All Time
Showing 25 most recent of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10502046 | Sensor standoff | Ahmed Amine Mahjoub, Sebastien Isambert, Emmanuel Fayeulle, Didier Fouillou, Christian Stoller | 2019-12-10 |
| 10162079 | Neutron-gamma density through normalized inelastic ratio | Avtandil Tkabladze, Kenneth E. Stephenson | 2018-12-25 |
| 10139518 | Neutron gamma density correction using elemental spectroscopy | — | 2018-11-27 |
| 9671519 | Neutron-gamma density through normalized inelastic ratio | Avtandil Tkabladze, Kenneth E. Stephenson | 2017-06-06 |
| 9268055 | Well-logging apparatus including azimuthally spaced radiation detectors | Avtandil Tkabladze, Christian Stoller | 2016-02-23 |
| 9175559 | Identification of casing collars while drilling and post drilling using LWD and wireline measurements | Najmud Dowla, John Rasmus, Abhijeet Nayan, Taesoo Kim, Richard J. Radtke | 2015-11-03 |
| 9052404 | Well-logging apparatus including azimuthally-spaced, noble gas-based detectors | Avtandil Tkabladze, Christian Stoller | 2015-06-09 |
| 8969792 | Apparatus and methods for measuring formation characteristics | Christian Stoller | 2015-03-03 |
| 8965703 | Applications based on fluid properties measured downhole | Ankur Prakash, John Rasmus, Richard J. Radtke, Lee Dolman | 2015-02-24 |
| 8918287 | Method of determining density of underground formations using neutron-gamma ray measurements | — | 2014-12-23 |
| 8868346 | Correction for low porosity effects on neutron gamma density | Marie-Laure Mauborgne | 2014-10-21 |
| 8664587 | Non-rotating logging-while-drilling neutron imaging tool | Peter Wraight, Christian Stoller, Avto Tkabladze | 2014-03-04 |
| 8645068 | Method and apparatus for determining formation and fluid properties | John Rasmus, Richard J. Radtke | 2014-02-04 |
| 8637807 | Apparatus and methods for measuring formation characteristics | Christian Stoller | 2014-01-28 |
| 8558165 | Nuclear tool | Christian Stoller | 2013-10-15 |
| 7642507 | Apparatus and methods for interlaced density and neutron measurements | Richard J. Radtke, Charles Flaum | 2010-01-05 |
| 7361886 | Corrections of gamma-ray responses | Christian Stoller, Charles Flaum | 2008-04-22 |
| 7334465 | Integrated logging tool for borehole | Jan W. Smits, Christian Stoller, Patrick Fisseler, Robert A. Adolph | 2008-02-26 |
| 7112783 | Neutron measurement method for determining porosity of a formation surrounding a borehole | Darwin V. Ellis, Benoit Couet, Charles R. Case, Francoise Allioli | 2006-09-26 |
| 7073378 | Integrated logging tool for borehole | Jan W. Smits, Christian Stoller, Patrick Fisseler, Robert A. Adolph | 2006-07-11 |
| 6944548 | Formation evaluation through azimuthal measurements | Richard J. Radtke, Robert A. Adolph, Loic Vilde, Nihal Wijeyesekera | 2005-09-13 |
| 6903330 | Multi-point subsurface measurement calibration | Luca Ortenzi, Richard J. Radtke | 2005-06-07 |
| 6648083 | Method and apparatus for measuring mud and formation properties downhole | Richard J. Radtke, W Robert Sloan, Robert A. Adolph | 2003-11-18 |
| 6473899 | Field configurable embedded computer system | Eric Nelson, Lance N. Shelton, Jared Coy Roundy | 2002-10-29 |
| 6285026 | Borehole caliper derived from neutron porosity measurements | David L. Best | 2001-09-04 |