- 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 47/107 - Locating fluid leaks, intrusions or movements using acoustic means
Patent holdings for IPC class E21B 47/107
Total number of patents in this class: 289
10-year publication summary
|
10
|
8
|
5
|
22
|
35
|
31
|
64
|
37
|
29
|
7
|
| 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 |
68 |
| Lytt Limited | 51 |
22 |
| Schlumberger Technology Corporation | 9690 |
20 |
| Saudi Arabian Oil Company | 11322 |
18 |
| BP Exploration Operating Company Limited | 270 |
13 |
| Hifi Engineering Inc. | 125 |
11 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
11 |
| Darkvision Technologies Inc. | 61 |
10 |
| ConocoPhillips Company | 1657 |
8 |
| Schlumberger Canada Limited | 6913 |
6 |
| Schlumberger Technology B.v. | 4951 |
5 |
| Baker Hughes Incorporated | 5689 |
5 |
| Services Petroliers Schlumberger | 5426 |
5 |
| Silixa Ltd. | 95 |
5 |
| Chevron U.S.A. Inc. | 3774 |
4 |
| Weatherford Technology Holdings, LLC | 2135 |
4 |
| ExxonMobil Upstream Research Company | 2525 |
4 |
| Merlin Technology, Inc. | 165 |
4 |
| Aramco Services Company | 3504 |
3 |
| Powdermet, Inc. | 45 |
3 |
| Other owners | 60 |