- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining 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: 2634
10-year publication summary
|
231
|
252
|
258
|
254
|
248
|
154
|
130
|
91
|
97
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
401 |
| Schlumberger Technology Corporation | 9690 |
230 |
| Saudi Arabian Oil Company | 11322 |
203 |
| Schlumberger Canada Limited | 6913 |
122 |
| Services Petroliers Schlumberger | 5426 |
102 |
| Schlumberger Technology B.v. | 4951 |
100 |
| Baker Hughes Incorporated | 5689 |
76 |
| Schlumberger Holdings Limited | 2947 |
68 |
| Aramco Services Company | 3504 |
54 |
| Prad Research and Development Limited | 2696 |
54 |
| ExxonMobil Upstream Research Company | 2525 |
35 |
| Weatherford Technology Holdings, LLC | 2135 |
34 |
| Landmark Graphics Corporation | 1526 |
30 |
| Baker Hughes, a GE Company, LLC | 2171 |
30 |
| Resman AS | 54 |
28 |
| ConocoPhillips Company | 1657 |
23 |
| Baker Hughes Holdings LLC | 3060 |
22 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
19 |
| BP Exploration Operating Company Limited | 270 |
18 |
| Chevron U.S.A. Inc. | 3774 |
17 |
| Other owners | 968 |