G01V 5/102
The neutron source being of the pulsed type
Official title: {the neutron source being of the pulsed type}
G01V5/102 (The neutron source being of the pulsed type) appears on 166 US grants and 116 published applications in this corpus.
Search patents in G01V- Granted patents
- 166
- Published applications
- 116
- Assignees
- 24
- Inventors
- 171
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 4 |
| 2006 | 0 | 1 |
| 2007 | 4 | 3 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 4 | 7 |
| 2015 | 3 | 6 |
| 2016 | 5 | 11 |
| 2017 | 10 | 8 |
| 2018 | 6 | 11 |
| 2019 | 13 | 8 |
| 2020 | 5 | 9 |
| 2021 | 10 | 7 |
| 2022 | 5 | 5 |
| 2023 | 9 | 7 |
| 2024 | 7 | 9 |
| 2025 | 11 | 4 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gamma-ray spectroscopy logging tool18 Aug 2026US 12,710,562 B2Halliburton Energy Services.Inc.
- Integrated pulsed neutron logging tool for spectroscopy and porosity measurements16 Jun 2026US 12,656,518 B2Halliburton Energy Services.Inc.
- Neutron absorbing dopant for reducing borehole fluid background in geochemical logging27 Jan 2026US 12,535,613 B2Halliburton Energy Services.Inc.
- Pulsed neutron logging mineralogy using oxide standards18 Nov 2025US 12,474,500 B2Halliburton Energy Services.Inc.
- Methods for differentiating and quantifying non-radioactive tracers downhole12 Aug 2025US 12,385,389 B2Carbo Ceramics Inc.
- Variable energy neutron well logging30 Jul 2026US 2026/0219416 A1Halliburton Energy Services.Inc.
- Techniques for Determining Carbon to Oxygen Ratio Using Neutron-Induced Gamma Ray Spectroscopy9 Jul 2026US 2026/0194684 A1Weatherford Technology Holdings, LLC
- Pulsed neutron methods for downhole formation evaluation and monitoring of natural hydrogen source rock and reservoirs28 May 2026US 2026/0147134 A1Halliburton Energy Services.Inc.
- Neutron absorbing dopant for reducing borehole fluid background in geochemical logging21 May 2026US 2026/0140275 A1Halliburton Energy Services.Inc.
- Methods for differentiating and quantifying non-radioactive tracers downhole9 Apr 2026US 2026/0098469 A1Carbo Ceramics Inc.
Most cited
By later US patents
- Combination of epithermal and inelastic neutron scattering methods to locate coal and oil shale zones275US 3,947,683 ATexaco Inc. · 1976
- Neutron characteristic and spectroscopy logging methods and apparatus55US 4,055,763 ASchlumberger Technology Corporation · 1977
- Carbon/oxygen well logging method and apparatus51US 4,937,446 ASchlumberger Technology Corporation · 1990
- Computer-based system for acquisition of nuclear well log data50US 4,471,435 ADresser Industries, Inc. · 1984
- Thermal decay time logging method and apparatus46US 4,721,853 ASchlumberger Technology Corporation · 1988