Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10185053 | Radiation generator and power supply configuration for well logging instruments | — | 2019-01-22 |
| 10145979 | Gamma-ray detectors for downhole applications | James A. Grau, Zilu Zhou, Kenneth E. Stephenson, Markus Berheide | 2018-12-04 |
| 9939551 | Systems, devices and methods for borehole gravimetry | Benjamin Levitt, Martin E. Poitzsch | 2018-04-10 |
| 9835736 | Thermally-protected scintillation detector | Christian Stoller, Robert A. Adolph | 2017-12-05 |
| 9599729 | Gamma-ray detectors for downhole applications | James A. Grau, Zilu Zhou, Kenneth E. Stephenson, Markus Berheide | 2017-03-21 |
| 9389333 | Radiation generator and power supply configuration for well logging instruments | — | 2016-07-12 |
| 9372277 | Neutron porosity downhole tool with improved precision and reduced lithology effects | Peter Wraight, James Thornton | 2016-06-21 |
| 9304226 | Scintillator-based neutron detector for oilfield applications | Markus Berheide, Jing Qian, Timothy Spillane | 2016-04-05 |
| 9217793 | Apparatus and method for detecting radiation | Zilu Zhou, Markus Berheide, Joshua W. Gibson | 2015-12-22 |
| 9031790 | System and method for correction of borehole effects in a neutron porosity measurement | James Thornton | 2015-05-12 |
| 8987670 | Thermally-protected scintillation detector | Christian Stoller, Robert A. Adolph | 2015-03-24 |
| 8901483 | Gamma-ray detectors for downhole applications | James A. Grau, Zilu Zhou, Kenneth E. Stephenson, Markus Berheide | 2014-12-02 |
| 8642944 | Downhole tools with solid-state neutron monitors | Richard Saenger, Zilu Zhou, Christian Stoller | 2014-02-04 |
| 8586913 | Fluidic density measurements based on beta particles detection | Zilu Zhou, Christopher Harrison, Chloe Coleou, Douglas W. Grant | 2013-11-19 |
| 8546749 | Intrinsic radioactivity in a scintillator as count rate reference | Markus Berheide, James A. Grau, Peter Wraight | 2013-10-01 |
| 8536517 | Scintillator based radiation detection | Markus Berheide, James A. Grau, Christian Stoller, Peter Wraight, Matthieu Simon | 2013-09-17 |
| 8431885 | Gamma-ray detectors for downhole applications | James A. Grau | 2013-04-30 |
| 8319175 | Nano-tips based gas ionization chamber for neutron detection | Zilu Zhou, Markus Berheide, Felix Chen, Joyce Wong, Martin G. Luling +1 more | 2012-11-27 |
| 8063356 | Method of extracting formation density and Pe using a pulsed accelerator based litho-density tool | Tong Zhou, Felix Chen, Charles R. Case, Darwin V. Ellis | 2011-11-22 |
| 7633058 | Hermetically sealed packaging and neutron shielding for scintillation-type radiation detectors | Christian Stoller, Olivier Philip | 2009-12-15 |
| 7591894 | LuAP scintillator | Arthur J. Becker, Yanqi Wang, John J. Simonetti | 2009-09-22 |
| 7366615 | Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrations | Susan Herron, James A. Grau, Michael M. Herron, Kenneth E. Stephenson | 2008-04-29 |
| 7148471 | Well logging apparatus and method for measuring formation properties | Charles R. Case | 2006-12-12 |
| 6125934 | Downhole tool and method for tracer injection | Christopher Lenn | 2000-10-03 |
| RE36012 | Accelerator-based methods and apparatus for measurement-while-drilling | William A. Loomis, Kenneth E. Stephenson, Jerome A. Truax, Wolfgang Ziegler, S. Zema Chowdhuri +6 more | 1998-12-29 |