G01V 5/108
The neutron source being of the pulsed type
Official title: {the neutron source being of the pulsed type}
G01V5/108 (The neutron source being of the pulsed type) appears on 67 US grants and 31 published applications in this corpus.
Search patents in G01V- Granted patents
- 67
- Published applications
- 31
- Assignees
- 21
- Inventors
- 76
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 3 | 4 |
| 2019 | 3 | 4 |
| 2020 | 3 | 5 |
| 2021 | 3 | 4 |
| 2022 | 2 | 1 |
| 2023 | 3 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Time-gated energy spectra for removal of borehole capture background30 Dec 2025US 12,510,686 B2Halliburton Energy Services.Inc.
- Near-field sensitivity of formation and cement porosity measurements with radial resolution in a borehole29 Jul 2025US 12,372,682 B2Visuray Intech Ltd (BVI)
- Non-radioactive tracers to evaluate fracturing procedures10 Oct 2023US 11,781,412 B2Carbo Ceramics Inc.
- Systems and methods for determining tubing deviations6 Jun 2023US 11,668,851 B2Baker Hughes Oilfield Operations LLC
- Pulsed neutron logging for petrolithium17 Jan 2023US 11,555,941 B1Weatherford Technology Holdings, LLC
- Time-gated energy spectra for removal of borehole capture background19 Mar 2026US 2026/0079279 A1Halliburton Energy Services.Inc.
- Time-Gated Energy Spectra For Removal Of Borehole Capture Background17 Jul 2025US 2025/0231317 A1Halliburton Energy Services.Inc.
- Non-radioactive tracers to evaluate fracturing procedures4 Apr 2024US 2024/0110471 A1Carbo Ceramics Inc.
- Near-Field Sensitivity of Formation and Cement Porosity Measurements With Radial Resolution in a Borehole23 Nov 2023US 2023/0375742 A1Visuray Intech Ltd (BVI)
- Systems and methods for determining tubing deviations15 Sep 2022US 2022/0291413 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Thermal decay time logging method and apparatus46US 4,721,853 ASchlumberger Technology Corporation · 1988
- Method and apparatus for determining borehole and formation constituents26US 4,507,554 ASchlumberger Technology Corporation · 1985
- Method and apparatus for epithermal neutron porosity well logging25US 5,051,581 ASchlumberger Technology Corporation · 1991
- Well logging sonde including a linear particle accelerator22US 4,093,854 ASchlumberger Technology Corporation · 1978
- Epithermal die-away porosity logging22US 4,097,737 AMobil Oil Corporation · 1978