- 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: 2748
10-year publication summary
|
232
|
229
|
227
|
135
|
111
|
73
|
98
|
88
|
82
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21115 |
418 |
| Schlumberger Technology Corporation | 11298 |
264 |
| Saudi Arabian Oil Company | 13865 |
220 |
| Schlumberger Canada Limited | 7497 |
147 |
| Services Petroliers Schlumberger | 5931 |
120 |
| Schlumberger Technology B.v. | 5251 |
114 |
| Baker Hughes Incorporated | 5098 |
72 |
| Schlumberger Holdings Limited | 2754 |
59 |
| Aramco Services Company | 4156 |
59 |
| Prad Research and Development Limited | 2684 |
54 |
| ExxonMobil Upstream Research Company | 2356 |
33 |
| Weatherford Technology Holdings, LLC | 2034 |
32 |
| Landmark Graphics Corporation | 1510 |
30 |
| ConocoPhillips Company | 1701 |
29 |
| Baker Hughes, a GE Company, LLC | 2105 |
29 |
| Resman AS | 77 |
27 |
| Baker Hughes Oilfield Operations, LLC | 2414 |
26 |
| Chevron U.S.A. Inc. | 4050 |
23 |
| OptaSense Holdings Limited | 194 |
18 |
| Baker Hughes Holdings LLC | 2985 |
18 |
| Other owners | 956 |