- All sections
- G - Physics
- G01V - Geophysicsgravitational measurementsdetecting masses or objectstags
- G01V 3/18 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging
Patent holdings for IPC class G01V 3/18
Total number of patents in this class: 1777
10-year publication summary
|
166
|
125
|
40
|
32
|
36
|
31
|
26
|
16
|
16
|
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 |
512 |
| Schlumberger Technology Corporation | 11584 |
202 |
| Schlumberger Canada Limited | 7588 |
149 |
| Services Petroliers Schlumberger | 5996 |
139 |
| Schlumberger Technology B.v. | 5282 |
128 |
| Baker Hughes Incorporated | 5018 |
125 |
| Prad Research and Development Limited | 2678 |
78 |
| Schlumberger Holdings Limited | 2724 |
77 |
| Saudi Arabian Oil Company | 13956 |
31 |
| Baker Hughes, a GE Company, LLC | 2091 |
23 |
| Landmark Graphics Corporation | 1508 |
14 |
| Chevron U.S.A. Inc. | 4117 |
14 |
| ExxonMobil Upstream Research Company | 2331 |
14 |
| Geoquest Systems B.V. | 856 |
10 |
| Baker Hughes Oilfield Operations, LLC | 2480 |
10 |
| Smith International, Inc. | 698 |
9 |
| Merlin Technology, Inc. | 165 |
9 |
| Gyrodata, Incorporated | 69 |
8 |
| PetroChina Company Limited | 848 |
7 |
| Probe Technology Services, Inc. | 33 |
7 |
| Other owners | 211 |