- 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: 134
10-year publication summary
|
10
|
11
|
9
|
12
|
13
|
6
|
2
|
4
|
12
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21251 |
29 |
| Schlumberger Technology Corporation | 11592 |
11 |
| Saudi Arabian Oil Company | 13969 |
10 |
| Motive Drilling Technologies, Inc. | 103 |
8 |
| Schlumberger Canada Limited | 7587 |
5 |
| Roke Technologies Ltd. | 18 |
5 |
| Board of Regents, The University of Texas System | 6070 |
4 |
| Schlumberger Technology B.v. | 5282 |
3 |
| Schlumberger Holdings Limited | 2722 |
3 |
| Aramco Services Company | 4164 |
3 |
| China Petroleum & Chemical Corporation | 2096 |
3 |
| Prad Research and Development Limited | 2676 |
3 |
| Services Petroliers Schlumberger | 5995 |
3 |
| Baker Hughes Oilfield Operations, LLC | 2492 |
3 |
| Imdex Technologies Pty Ltd | 90 |
3 |
| Baker Hughes Incorporated | 5009 |
2 |
| globalTech Corporation Pty Ltd | 31 |
2 |
| Well Resolutions Technology | 39 |
2 |
| Baker Hughes, a GE Company, LLC | 2091 |
2 |
| Equinor Energy AS | 495 |
2 |
| Other owners | 28 |