- 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 47/10 - Locating fluid leaks, intrusions or movements
Patent holdings for IPC class E21B 47/10
Total number of patents in this class: 2752
10-year publication summary
|
228
|
232
|
229
|
227
|
136
|
111
|
74
|
96
|
88
|
71
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
415 |
| Schlumberger Technology Corporation | 10914 |
260 |
| Saudi Arabian Oil Company | 13428 |
218 |
| Schlumberger Canada Limited | 7373 |
148 |
| Services Petroliers Schlumberger | 5835 |
122 |
| Schlumberger Technology B.v. | 5189 |
115 |
| Baker Hughes Incorporated | 5243 |
74 |
| Schlumberger Holdings Limited | 2800 |
63 |
| Aramco Services Company | 4039 |
59 |
| Prad Research and Development Limited | 2690 |
54 |
| ExxonMobil Upstream Research Company | 2390 |
33 |
| Weatherford Technology Holdings, LLC | 2033 |
32 |
| Landmark Graphics Corporation | 1523 |
30 |
| Baker Hughes, a GE Company, LLC | 2109 |
29 |
| ConocoPhillips Company | 1683 |
27 |
| Resman AS | 75 |
27 |
| Baker Hughes Oilfield Operations, LLC | 2334 |
24 |
| Chevron U.S.A. Inc. | 4004 |
22 |
| Baker Hughes Holdings LLC | 2999 |
18 |
| BP Exploration Operating Company Limited | 268 |
17 |
| Other owners | 965 |