- 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 47/107 - Locating fluid leaks, intrusions or movements using acoustic means
Patent holdings for IPC class E21B 47/107
Total number of patents in this class: 364
10-year publication summary
|
5
|
23
|
35
|
33
|
66
|
40
|
33
|
27
|
31
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21320 |
95 |
| Schlumberger Technology Corporation | 11798 |
26 |
| Saudi Arabian Oil Company | 14207 |
24 |
| Lytt Limited | 45 |
21 |
| BP Exploration Operating Company Limited | 257 |
13 |
| Baker Hughes Oilfield Operations, LLC | 2521 |
12 |
| ConocoPhillips Company | 1708 |
11 |
| Hifi Engineering Inc. | 138 |
11 |
| Darkvision Technologies Inc. | 91 |
9 |
| Schlumberger Canada Limited | 7606 |
8 |
| Schlumberger Technology B.v. | 5298 |
7 |
| Chevron U.S.A. Inc. | 4134 |
7 |
| Services Petroliers Schlumberger | 6024 |
7 |
| Merlin Technology, Inc. | 168 |
6 |
| Silixa Ltd. | 84 |
6 |
| Baker Hughes Incorporated | 4940 |
5 |
| Weatherford Technology Holdings, LLC | 2154 |
5 |
| ExxonMobil Upstream Research Company | 2306 |
4 |
| Archer Oiltools AS | 45 |
4 |
| Aramco Services Company | 4188 |
3 |
| Other owners | 80 |