- 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 47/008 - 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: 638
10-year publication summary
|
14
|
15
|
15
|
44
|
52
|
52
|
47
|
47
|
53
|
8
|
| 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 |
113 |
| Schlumberger Technology Corporation | 11298 |
59 |
| Schlumberger Canada Limited | 7497 |
49 |
| Saudi Arabian Oil Company | 13865 |
44 |
| Services Petroliers Schlumberger | 5931 |
39 |
| Schlumberger Technology B.v. | 5251 |
30 |
| Baker Hughes Oilfield Operations, LLC | 2414 |
21 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 224 |
16 |
| Schlumberger Holdings Limited | 2754 |
15 |
| Prad Research and Development Limited | 2684 |
15 |
| Sensia LLC | 142 |
15 |
| Weatherford Technology Holdings, LLC | 2034 |
14 |
| Baker Hughes Incorporated | 5098 |
10 |
| Aramco Services Company | 4156 |
10 |
| Schneider Electric Systems USA, Inc. | 448 |
10 |
| Geoquest Systems B.V. | 816 |
9 |
| ExxonMobil Technology and Engineering Company | 1239 |
7 |
| Landmark Graphics Corporation | 1510 |
6 |
| ExxonMobil Upstream Research Company | 2356 |
6 |
| Bristol, Inc., d/b/a Remote Automation Solutions | 98 |
3 |
| Other owners | 147 |