- 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: 4161
10-year publication summary
|
317
|
335
|
393
|
331
|
317
|
335
|
263
|
230
|
222
|
151
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20911 |
741 |
| Schlumberger Technology Corporation | 10780 |
426 |
| Saudi Arabian Oil Company | 13224 |
273 |
| Schlumberger Canada Limited | 7332 |
215 |
| Services Petroliers Schlumberger | 5803 |
185 |
| Schlumberger Technology B.v. | 5176 |
156 |
| Baker Hughes Incorporated | 5274 |
113 |
| Baker Hughes, a GE Company, LLC | 2110 |
77 |
| Schlumberger Holdings Limited | 2817 |
62 |
| Prad Research and Development Limited | 2693 |
60 |
| ConocoPhillips Company | 1675 |
59 |
| Baker Hughes Oilfield Operations, LLC | 2302 |
56 |
| ExxonMobil Upstream Research Company | 2396 |
51 |
| Landmark Graphics Corporation | 1527 |
50 |
| Weatherford Technology Holdings, LLC | 2023 |
50 |
| Chevron U.S.A. Inc. | 3967 |
43 |
| Aramco Services Company | 3987 |
31 |
| Baker Hughes Holdings LLC | 3007 |
30 |
| Geoquest Systems B.V. | 754 |
27 |
| Metrol Technology Limited | 85 |
27 |
| Other owners | 1429 |