- 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: 2725
10-year publication summary
|
252
|
258
|
254
|
249
|
152
|
130
|
87
|
110
|
95
|
53
|
| 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 |
413 |
| Schlumberger Technology Corporation | 10717 |
253 |
| Saudi Arabian Oil Company | 13155 |
215 |
| Schlumberger Canada Limited | 7296 |
145 |
| Services Petroliers Schlumberger | 5788 |
119 |
| Schlumberger Technology B.v. | 5168 |
113 |
| Baker Hughes Incorporated | 5247 |
74 |
| Schlumberger Holdings Limited | 2828 |
64 |
| Aramco Services Company | 3969 |
58 |
| Prad Research and Development Limited | 2693 |
54 |
| ExxonMobil Upstream Research Company | 2397 |
33 |
| Weatherford Technology Holdings, LLC | 2023 |
32 |
| Landmark Graphics Corporation | 1526 |
30 |
| Baker Hughes, a GE Company, LLC | 2112 |
29 |
| Resman AS | 74 |
27 |
| ConocoPhillips Company | 1673 |
26 |
| Baker Hughes Oilfield Operations, LLC | 2301 |
23 |
| Chevron U.S.A. Inc. | 3955 |
22 |
| Baker Hughes Holdings LLC | 3007 |
18 |
| BP Exploration Operating Company Limited | 268 |
17 |
| Other owners | 960 |