- All sections
- G - Physics
- G01V - Geophysicsgravitational measurementsdetecting masses or objectstags
- G01V 3/28 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
Patent holdings for IPC class G01V 3/28
Total number of patents in this class: 767
10-year publication summary
|
88
|
81
|
71
|
39
|
35
|
15
|
34
|
12
|
19
|
12
|
| 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 |
290 |
| Schlumberger Technology Corporation | 11584 |
92 |
| Baker Hughes Incorporated | 5018 |
36 |
| Saudi Arabian Oil Company | 13956 |
34 |
| Schlumberger Canada Limited | 7588 |
24 |
| Schlumberger Technology B.v. | 5282 |
24 |
| Services Petroliers Schlumberger | 5996 |
24 |
| Schlumberger Holdings Limited | 2724 |
21 |
| Prad Research and Development Limited | 2678 |
20 |
| Baker Hughes, a GE Company, LLC | 2091 |
18 |
| Well Resolutions Technology | 39 |
17 |
| Baker Hughes Oilfield Operations, LLC | 2480 |
11 |
| Oliden Technology, LLC | 46 |
10 |
| Baker Hughes Holdings LLC | 2986 |
9 |
| Hunting Titan, Inc. | 234 |
5 |
| Probe Technology Services, Inc. | 33 |
5 |
| Smith International, Inc. | 698 |
4 |
| Aramco Services Company | 4162 |
4 |
| China National Petroleum Corporation | 580 |
4 |
| China Petroleum & Chemical Corporation | 2095 |
4 |
| Other owners | 111 |