- 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: 532
10-year publication summary
|
52
|
52
|
30
|
23
|
26
|
15
|
18
|
16
|
19
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21257 |
142 |
| Schlumberger Technology Corporation | 11584 |
65 |
| Baker Hughes Incorporated | 5018 |
48 |
| Saudi Arabian Oil Company | 13956 |
30 |
| Schlumberger Canada Limited | 7588 |
26 |
| Services Petroliers Schlumberger | 5996 |
24 |
| Schlumberger Technology B.v. | 5282 |
23 |
| Schlumberger Holdings Limited | 2724 |
18 |
| Prad Research and Development Limited | 2678 |
16 |
| Baker Hughes, a GE Company, LLC | 2091 |
10 |
| Earthsystems Technologies Operating LLC | 24 |
10 |
| Smith International, Inc. | 698 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2480 |
6 |
| Groundmetrics, Inc. | 19 |
5 |
| Reeves Wireline Technologies Limited | 55 |
5 |
| Applied Technologies Associates, Inc. | 12 |
4 |
| Petrolink International Ltd. | 22 |
4 |
| Baker Hughes Holdings LLC | 2986 |
4 |
| Fleet Space Technologies Pty Ltd | 39 |
4 |
| Weatherford Technology Holdings, LLC | 2072 |
3 |
| Other owners | 79 |