- 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 47/008 - Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
Patent holdings for IPC class E21B 47/008
Total number of patents in this class: 530
10-year publication summary
|
35
|
11
|
27
|
21
|
20
|
50
|
60
|
56
|
57
|
10
|
| 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 |
87 |
| Schlumberger Technology Corporation | 9690 |
48 |
| Schlumberger Canada Limited | 6913 |
42 |
| Services Petroliers Schlumberger | 5426 |
36 |
| Saudi Arabian Oil Company | 11322 |
29 |
| Schlumberger Technology B.v. | 4951 |
28 |
| Schlumberger Holdings Limited | 2947 |
16 |
| Prad Research and Development Limited | 2696 |
15 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
15 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 196 |
14 |
| Weatherford Technology Holdings, LLC | 2135 |
11 |
| Sensia LLC | 139 |
11 |
| Baker Hughes Incorporated | 5689 |
10 |
| Schneider Electric Systems USA, Inc. | 441 |
10 |
| Geoquest Systems B.V. | 584 |
8 |
| ExxonMobil Upstream Research Company | 2525 |
6 |
| Aramco Services Company | 3504 |
5 |
| ExxonMobil Technology and Engineering Company | 676 |
5 |
| Landmark Graphics Corporation | 1526 |
4 |
| Kelvin Inc. | 8 |
4 |
| Other owners | 126 |