G01V 3/20
Operating with propagation of electric current
Official title: operating with propagation of electric current
G01V3/20 (Operating with propagation of electric current) appears on 765 US grants and 655 published applications in this corpus.
Search patents in G01V- Granted patents
- 765
- Published applications
- 655
- Assignees
- 168
- Inventors
- 1,128
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 10 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 9 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 11 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 16 | 0 |
| 2001 | 7 | 4 |
| 2002 | 11 | 8 |
| 2003 | 12 | 13 |
| 2004 | 9 | 15 |
| 2005 | 9 | 13 |
| 2006 | 18 | 13 |
| 2007 | 11 | 19 |
| 2008 | 14 | 21 |
| 2009 | 11 | 21 |
| 2010 | 15 | 30 |
| 2011 | 19 | 31 |
| 2012 | 26 | 25 |
| 2013 | 15 | 32 |
| 2014 | 30 | 36 |
| 2015 | 26 | 54 |
| 2016 | 20 | 48 |
| 2017 | 42 | 61 |
| 2018 | 50 | 49 |
| 2019 | 63 | 31 |
| 2020 | 50 | 27 |
| 2021 | 37 | 37 |
| 2022 | 31 | 14 |
| 2023 | 31 | 19 |
| 2024 | 19 | 10 |
| 2025 | 16 | 13 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods to perform joint inversion of formation data and joint inversion systems6 Oct 2026US 12,754,340 B2Halliburton Energy Services.Inc.
- In situ concentration of hydrocarbons in rock22 Sep 2026US 12,742,768 B2Saudi Arabian Oil Company
- Determining invaded zones in resistivity logging14 Jul 2026US 12,681,202 B2Halliburton Energy Services.Inc.
- System and method for enhancing petrophysical characterization of porous media12 May 2026US 12,625,296 B2Baker Hughes Oilfield Operations LLC
- Gradational resistivity models with local anisotropy for distance to bed boundary inversion24 Feb 2026US 12,560,075 B2Halliburton Energy Services.Inc.
- Resistivity Logging-Based Oil-Gas Well Skin Factor Calculation Method and Related Apparatus (2380406CN-US COSL-YJ)1 Oct 2026US 2026/0300568 A1China Oilfield Services Limited
- Z-shaped steel wire sealed load-bearing detection cable17 Sep 2026US 2026/0276855 A1Hebei Huatong Wires & Cables Group Co., Ltd.
- Method and apparatus for making imaging measurements of a formation core30 Jul 2026US 2026/0219413 A1Halliburton Energy Services.Inc.
- Method and system for tracking grout diffusion by integrating optical fiber sensing and electrical resistance tomography16 Jul 2026US 2026/0202576 A1Shandong University
- Method for the estimation of rock mechanical properties using downhole measurements of borehole ovality25 Jun 2026US 2026/0176952 A1Aramco Innovations LLC
Most cited
By later US patents
- Method and apparatus for determining shaliness and oil saturations in earth formations using induced polarization in the frequency domain297US 4,359,687 AShell Oil Company · 1982
- Induced polarization method and apparatus for distinguishing dispersed and laminated clay in earth formations291US 4,769,606 AShell Oil Company · 1988
- Apparatus for focused electrode induced polarization logging288US 4,583,046 AShell Oil Company · 1986
- Method for induced polarization logging287US 4,658,215 AShell Oil Company · 1987
- Method for correcting an electrical log for the presence of shale in a formation283US 4,398,151 AShell Oil Company · 1983