- 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 47/026 - Determining slope or direction of penetrated ground layers
Patent holdings for IPC class E21B 47/026
Total number of patents in this class: 126
10-year publication summary
|
14
|
10
|
11
|
9
|
11
|
13
|
6
|
2
|
3
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20891 |
28 |
| Schlumberger Technology Corporation | 10717 |
10 |
| Motive Drilling Technologies, Inc. | 103 |
8 |
| Saudi Arabian Oil Company | 13155 |
8 |
| Schlumberger Canada Limited | 7296 |
5 |
| Roke Technologies Ltd. | 18 |
5 |
| Board of Regents, The University of Texas System | 5793 |
4 |
| Schlumberger Technology B.v. | 5168 |
3 |
| Schlumberger Holdings Limited | 2828 |
3 |
| Aramco Services Company | 3969 |
3 |
| China Petroleum & Chemical Corporation | 1903 |
3 |
| Prad Research and Development Limited | 2693 |
3 |
| Services Petroliers Schlumberger | 5788 |
3 |
| Baker Hughes Incorporated | 5247 |
2 |
| globalTech Corporation Pty Ltd | 27 |
2 |
| Well Resolutions Technology | 38 |
2 |
| Baker Hughes Oilfield Operations, LLC | 2301 |
2 |
| Baker Hughes, a GE Company, LLC | 2112 |
2 |
| Equinor Energy AS | 492 |
2 |
| Imdex Technologies Pty Ltd | 65 |
2 |
| Other owners | 26 |