- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 47/0224 - Determining slope or direction of the borehole, e.g. using geomagnetism using seismic or acoustic means
Patent holdings for IPC class E21B 47/0224
Total number of patents in this class: 106
10-year publication summary
|
1
|
5
|
6
|
5
|
11
|
16
|
8
|
11
|
9
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20862 |
26 |
| Schlumberger Technology Corporation | 10673 |
9 |
| Saudi Arabian Oil Company | 12997 |
8 |
| Schlumberger Canada Limited | 7283 |
5 |
| Baker Hughes Incorporated | 5273 |
5 |
| Schlumberger Technology B.v. | 5164 |
4 |
| Landmark Graphics Corporation | 1525 |
4 |
| Services Petroliers Schlumberger | 5775 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2289 |
4 |
| ConocoPhillips Company | 1676 |
3 |
| Silixa Ltd. | 95 |
3 |
| Schlumberger Holdings Limited | 2834 |
2 |
| Aramco Services Company | 3936 |
2 |
| Iluka Resources Limited | 37 |
2 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 324 |
2 |
| Pipelines 2 Data (p2d) Limited | 18 |
2 |
| Prad Research and Development Limited | 2693 |
2 |
| Baker Hughes, a GE Company, LLC | 2113 |
2 |
| Equinor Energy AS | 491 |
2 |
| The Regents of the University of California | 19868 |
1 |
| Other owners | 14 |