Issued Patents All Time
Showing 26–50 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10539414 | Determining tubing wall thickness | Dongwon Lee | 2020-01-21 |
| 10502861 | Long-lifetime, high-yield, fast neutrons source | Juan Navarro-Sorroche | 2019-12-10 |
| 10495524 | Apparatus and method for monitoring production wells | Burkay Donderici, Aixa Maria Rivera-Rios | 2019-12-03 |
| 10480306 | Cement evaluation with neutron-neutron measurement | Daniel F. Dorffer | 2019-11-19 |
| 10459112 | Determining a characteristic of a material surrounding a wellbore based on count rates of scattered photons | Yike Hu | 2019-10-29 |
| 10455684 | Field-ionization neutron generator | Juan Navarro-Sorroche | 2019-10-22 |
| 10438713 | High output accelerator neutron source | Juan Navarro-Sorroche | 2019-10-08 |
| 10408968 | Field emission ion source neutron generator | Juan Navarro-Sorroche | 2019-09-10 |
| 10393917 | Cement evaluation with X-ray tomography | Yike Hu | 2019-08-27 |
| 10386533 | Downhole tool apparatus, system, and methods | Dongwon Lee | 2019-08-20 |
| 10386537 | Gamma-ray spectrometer calibration systems and methods | James E. Galford | 2019-08-20 |
| 10359374 | Identification of annulus materials using formation porosity | Qingzhen Guo, James E. Galford | 2019-07-23 |
| 10288749 | Photon collimation apparatus, methods, and systems | Yike Hu, Dongwon Lee | 2019-05-14 |
| 10288763 | Long-lifetime, high-yield, fast neutrons source | Juan Navarro-Sorroche | 2019-05-14 |
| 10280738 | Determination of radiation tracer distribution using natural gamma rays | Qingzhen Guo | 2019-05-07 |
| 10281593 | Energy detection apparatus, methods, and systems | Yike Hu | 2019-05-07 |
| 10274638 | Downhole gamma-ray generators and systems to generate gamma-rays in a downhole environment | Juan Navarro Sorroche | 2019-04-30 |
| 10267947 | Signal stabilization and calibration for neutron detection | Da Lou, Ronald E. Cherry | 2019-04-23 |
| 10240451 | Downhole tomographic imaging | Dongwon Lee, Sriram Srinivasan | 2019-03-26 |
| 10209378 | Photopeak location systems and methods | James E. Galford | 2019-02-19 |
| 10209398 | Drilling fluid property determination | Zhijuan Zhang, Sriram Srinivasan | 2019-02-19 |
| 10209393 | Method to correct and pulsed neutron fan based interpretation for shale effects | John Andrew Quirein, Natasa Mekic, Daniel F. Dorffer, Christopher S. McIlroy | 2019-02-19 |
| 10209395 | Formation independent cement evaluation with active gamma ray detection | Yike Hu | 2019-02-19 |
| 10182491 | Deuterium-deuterium neutron generators | Juan Navarro-Sorroche | 2019-01-15 |
| 10156657 | System and method of determining a value indicative of hydrogen index | Daniel F. Dorffer | 2018-12-18 |