- 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 47/06 - Measuring temperature or pressure
Patent holdings for IPC class E21B 47/06
Total number of patents in this class: 4212
10-year publication summary
|
317
|
334
|
393
|
331
|
317
|
335
|
263
|
230
|
223
|
193
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21021 |
749 |
| Schlumberger Technology Corporation | 11023 |
431 |
| Saudi Arabian Oil Company | 13622 |
283 |
| Schlumberger Canada Limited | 7418 |
219 |
| Services Petroliers Schlumberger | 5874 |
189 |
| Schlumberger Technology B.v. | 5217 |
161 |
| Baker Hughes Incorporated | 5179 |
110 |
| Baker Hughes, a GE Company, LLC | 2107 |
77 |
| Schlumberger Holdings Limited | 2791 |
61 |
| ConocoPhillips Company | 1682 |
60 |
| Prad Research and Development Limited | 2687 |
60 |
| Baker Hughes Oilfield Operations, LLC | 2380 |
56 |
| Weatherford Technology Holdings, LLC | 2034 |
53 |
| ExxonMobil Upstream Research Company | 2380 |
51 |
| Landmark Graphics Corporation | 1517 |
50 |
| Chevron U.S.A. Inc. | 4014 |
45 |
| Aramco Services Company | 4090 |
31 |
| Baker Hughes Holdings LLC | 3005 |
30 |
| Geoquest Systems B.V. | 793 |
27 |
| Metrol Technology Limited | 85 |
27 |
| Other owners | 1442 |