G01V 3/22
Using dc
Official title: using DC
G01V3/22 (Using dc) appears on 37 US grants and 25 published applications in this corpus.
Search patents in G01V- Granted patents
- 37
- Published applications
- 25
- Assignees
- 16
- Inventors
- 65
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 3 | 2 |
| 2016 | 0 | 3 |
| 2017 | 3 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 4 | 0 |
| 2023 | 3 | 2 |
| 2024 | 6 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System for multimode geophysical data acquisition11 Nov 2025US 12,470,429 B1EarthSystems Technologies Operating LLC
- Apparatus and method for measuring thickness of tubings in downhole applications7 Jan 2025US 12,188,995 B2GOWell International, LLC
- Resistivity imaging system with compensator for parasitic impedances between electrodes and their conductive substrates17 Sep 2024US 12,092,600 B2Qinetiq Limited
- Method for multichannel acquisition of geophysical data and system implementation17 Sep 2024US 12,095,589 B1Earthsystems Technologies, Inc.
- Method for multichannel acquisition of geophysical data and system implementation17 Sep 2024US 12,095,590 B1Earthsystems Technologies, Inc.
- Apparatus and method for measuring thickness of tubings in downhole applications13 Jul 2023US 2023/0221385 A1GOWell International, LLC
- Resistivity Imaging System with Compensator for Parasitic Impedances between Electrodes and their Conductive Substrates5 Jan 2023US 2023/0003677 A1Qinetiq Limited
- System and method for dynamic measurement of streaming potential in a core plug2 Sep 2021US 2021/0270714 A1Saudi Arabian Oil Company
- Methods and systems of determining parameters characterizing porous media from data gathered by a plurality of different tools9 Apr 2020US 2020/0110191 A1Schlumberger Technology Corporation
- Methods And Systems For Determining Formation Properties And Pipe Properties Using Ranging Measurements18 Apr 2019US 2019/0113648 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Resistivity measurement system for drilling with casing172US 5,168,942 AAtlantic Richfield Company · 1992
- Integrated borehole system for reservoir detection and monitoring43US 6,541,975 B2KJT Enterprises, Inc. · 2003
- Method and apparatus for determining the resistivity and conductivity of geological formations surrounding a borehole29US 6,060,885 AWestern Atlas International, Inc. · 2000
- Integrated borehole system for reservoir detection and monitoring28US 6,670,813 B2KJT Enterprises, Inc. · 2003
- Methods and apparatus for measuring electrical properties of a ground using a graphite electrode24US 6,674,286 B2Advanced Geosciences, Inc. · 2004