- 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 47/0232 - Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor at least one of the energy sources or one of the detectors being located on or above the ground surface
Patent holdings for IPC class E21B 47/0232
Total number of patents in this class: 41
10-year publication summary
|
3
|
3
|
5
|
6
|
7
|
2
|
2
|
2
|
7
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merlin Technology, Inc. | 163 |
11 |
| Halliburton Energy Services, Inc. | 21153 |
5 |
| The Charles Machine Works, Inc. | 415 |
5 |
| Applied Technologies Associates, Inc. | 12 |
4 |
| Underground Magnetics, Inc. | 39 |
4 |
| ConocoPhillips Company | 1700 |
2 |
| Baker Hughes Oilfield Operations, LLC | 2423 |
2 |
| Baker Hughes Incorporated | 5082 |
1 |
| Metrotech Corporation | 58 |
1 |
| National Central University | 251 |
1 |
| Scientific Drilling International, Inc. | 169 |
1 |
| Tracto-Technik GmbH & Co. KG | 170 |
1 |
| GE Infrastructure Technology, LLC | 6208 |
1 |
| UTTO, Inc., DBA IPEG Corporation | 16 |
1 |
| Kormee B.V. | 2 |
1 |
| Other owners | 0 |