G01V 3/30
Operating with electromagnetic waves
Official title: operating with electromagnetic waves
G01V3/30 (Operating with electromagnetic waves) appears on 877 US grants and 810 published applications in this corpus.
Search patents in G01V- Granted patents
- 877
- Published applications
- 810
- Assignees
- 197
- Inventors
- 1,115
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 15 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 3 |
| 2002 | 14 | 8 |
| 2003 | 13 | 23 |
| 2004 | 17 | 13 |
| 2005 | 16 | 18 |
| 2006 | 8 | 21 |
| 2007 | 14 | 9 |
| 2008 | 21 | 15 |
| 2009 | 9 | 22 |
| 2010 | 12 | 21 |
| 2011 | 12 | 22 |
| 2012 | 8 | 11 |
| 2013 | 11 | 51 |
| 2014 | 27 | 37 |
| 2015 | 26 | 51 |
| 2016 | 43 | 70 |
| 2017 | 60 | 59 |
| 2018 | 43 | 65 |
| 2019 | 77 | 80 |
| 2020 | 71 | 50 |
| 2021 | 74 | 53 |
| 2022 | 40 | 28 |
| 2023 | 37 | 29 |
| 2024 | 31 | 19 |
| 2025 | 19 | 16 |
| 2026 | 17 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Estimating EM LWD measurement uncertainty using machine learning6 Oct 2026US 12,754,343 B2Schlumberger Technology Corporation
- Fast approach for acoustic impedance computation through dimension expansion15 Sep 2026US 12,736,701 B2Halliburton Energy Services.Inc.
- Distributed electromagnetic interrogation system15 Sep 2026US 12,736,705 B2United States Department of Energy
- Systems and methods for defining and transmitting subsurface commands21 Jul 2026US 12,687,108 B1Schlumberger Technology Corporation
- Enhanced look ahead prediction19 May 2026US 12,631,782 B1Halliburton Energy Services.Inc.
- Integrated Multi-Physics Sensing for Real-Time Look-Ahead While Drilling8 Oct 2026US 2026/0309025 A1
- Non-rotational azimuthal resistivity tool20 Aug 2026US 2026/0243915 A1Halliburton Energy Services.Inc.
- System and method having machine learning-assisted inversion of borehole measurements20 Aug 2026US 2026/0243917 A1Schlumberger Technology Corporation
- Wirelessly powered and activated electromagnetic transmitters behind casing for reservoir monitoring6 Aug 2026US 2026/0227543 A1Halliburton Energy Services.Inc.
- System and method for calibrating through-casing electromagnetic instruments6 Aug 2026US 2026/0227545 A1China Petroleum & Chemical Corporation
Most cited
By later US patents
- Well system221US 6,296,066 B1Halliburton Energy Services.Inc. · 2001
- Method and apparatus for determining position in a pipe176US 6,759,968 B2Marathon Oil Company · 2004
- Well system175US 7,172,038 B2Halliburton Energy Services.Inc. · 2007
- Method and apparatus for determining position in a pipe167US 6,333,699 B1Marathon Oil Company · 2001
- Well logging apparatus and method for determining formation resistivity at a shallow and a deep depth162US 4,899,112 ASchlumberger Technology Corporation · 1990