G01V 3/265
Operating with fields produced by spontaneous potentials
Official title: {Operating with fields produced by spontaneous potentials, e.g. electrochemicals or produced by telluric currents}
G01V3/265 (Operating with fields produced by spontaneous potentials) appears on 65 US grants and 47 published applications in this corpus.
Search patents in G01V- Granted patents
- 65
- Published applications
- 47
- Assignees
- 37
- Inventors
- 120
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 5 |
| 2006 | 3 | 6 |
| 2007 | 6 | 3 |
| 2008 | 4 | 4 |
| 2009 | 2 | 4 |
| 2010 | 2 | 0 |
| 2011 | 3 | 2 |
| 2012 | 1 | 2 |
| 2013 | 0 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 3 |
| 2016 | 3 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 3 |
| 2019 | 1 | 3 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coal spontaneous combustion downhole detection system and method based on self-potential method14 Jul 2026US 12,681,203 B2Shandong University of Science and Technology
- Online monitoring of production processes using electron paramagnetic resonance (EPR)14 Nov 2023US 11,815,501 B2Microsilicon, Inc.
- Online monitoring of production processes using electron paramagnetic resonance (EPR)13 Dec 2022US 11,525,816 B2Microsilicon, Inc.
- Capacitive electromagnetic formation surveillance using passive source31 May 2022US 11,346,973 B2Saudi Arabian Oil Company
- Systems and methods for detecting seismo-electromagnetic conversion19 Apr 2022US 11,307,324 B2Massachusetts Institute of Technology
- Geology, temperature, geophysics, stress orientations, and natural fracturing7 Aug 2025US 2025/0251523 A1Fervo Energy Company
- Coal Spontaneous Combustion Downhole Detection System and Method Based on Self-Potential Method17 Apr 2025US 2025/0123418 A1Shandong University of Science and Technology
- Online monitoring of production processes using electron paramagnetic resonance (epr)27 Apr 2023US 2023/0127803 A1Microsilicon, Inc.
- Sensing cable in a wellbore17 Mar 2022US 2022/0082725 A1Patriot Research Center, LLC
- Online monitoring of production processes using electron paramagnetic resonance(epr)11 Mar 2021US 2021/0072209 A1Microsilicon, Inc.
Most cited
By later US patents
- In-situ method for determining pore size distribution, capillary pressure and permeability296US 4,644,283 AShell Oil Company · 1987
- In-situ induced polarization method for determining formation permeability285US 4,743,854 AShell Oil Company · 1988
- Logging a well84US 7,350,568 B2Halliburton Energy Services.Inc. · 2008
- Apparatus and method for combined acoustic and seismoelectric logging measurements56US 5,841,280 AWestern Atlas International, Inc. · 1998
- Method for determining subsurface electrical resistance using electroseismic measurements51US 5,486,764 AExxon Production Research Company · 1996