- 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 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
Patent holdings for IPC class E21B 47/022
Total number of patents in this class: 1169
10-year publication summary
|
87
|
125
|
56
|
57
|
40
|
44
|
32
|
37
|
38
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21125 |
314 |
| Schlumberger Technology Corporation | 11326 |
111 |
| Schlumberger Canada Limited | 7511 |
54 |
| Services Petroliers Schlumberger | 5940 |
45 |
| Schlumberger Technology B.v. | 5257 |
42 |
| Saudi Arabian Oil Company | 13886 |
38 |
| Baker Hughes Incorporated | 5094 |
30 |
| Prad Research and Development Limited | 2683 |
30 |
| Schlumberger Holdings Limited | 2754 |
29 |
| Gyrodata, Incorporated | 85 |
22 |
| Scientific Drilling International, Inc. | 169 |
22 |
| Nabors Drilling Technologies USA, Inc. | 564 |
20 |
| Motive Drilling Technologies, Inc. | 103 |
19 |
| Landmark Graphics Corporation | 1509 |
14 |
| Merlin Technology, Inc. | 164 |
14 |
| Baker Hughes, a GE Company, LLC | 2105 |
13 |
| Magnetic Variation Services, LLC | 40 |
11 |
| Bench Tree Group, LLC | 65 |
10 |
| ConocoPhillips Company | 1699 |
9 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 340 |
9 |
| Other owners | 313 |