- All sections
- G - Physics
- G01V - Geophysicsgravitational measurementsdetecting masses or objectstags
- G01V 3/20 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with propagation of electric current
Patent holdings for IPC class G01V 3/20
Total number of patents in this class: 535
10-year publication summary
|
45
|
52
|
52
|
30
|
23
|
25
|
15
|
19
|
16
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20697 |
141 |
| Schlumberger Technology Corporation | 10597 |
64 |
| Baker Hughes Incorporated | 5299 |
53 |
| Schlumberger Canada Limited | 7211 |
27 |
| Saudi Arabian Oil Company | 12808 |
27 |
| Services Petroliers Schlumberger | 5743 |
25 |
| Schlumberger Technology B.v. | 5141 |
24 |
| Schlumberger Holdings Limited | 2846 |
19 |
| Prad Research and Development Limited | 2695 |
16 |
| Groundmetrics, Inc. | 31 |
11 |
| Baker Hughes, a GE Company, LLC | 2114 |
10 |
| Earthsystems Technologies Operating LLC | 21 |
9 |
| Smith International, Inc. | 722 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2252 |
6 |
| Reeves Wireline Technologies Limited | 56 |
5 |
| Applied Technologies Associates, Inc. | 12 |
4 |
| Petrolink International Ltd. | 22 |
4 |
| Baker Hughes Holdings LLC | 3011 |
4 |
| Weatherford Technology Holdings, LLC | 2010 |
3 |
| Aramco Services Company | 3897 |
3 |
| Other owners | 74 |