- 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 47/06 - Measuring temperature or pressure
Patent holdings for IPC class E21B 47/06
Total number of patents in this class: 3816
10-year publication summary
|
313
|
363
|
373
|
438
|
372
|
340
|
364
|
279
|
231
|
76
|
| 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 |
685 |
| Schlumberger Technology Corporation | 9690 |
362 |
| Saudi Arabian Oil Company | 11322 |
241 |
| Schlumberger Canada Limited | 6913 |
177 |
| Services Petroliers Schlumberger | 5426 |
153 |
| Schlumberger Technology B.v. | 4951 |
130 |
| Baker Hughes Incorporated | 5689 |
118 |
| Baker Hughes, a GE Company, LLC | 2171 |
77 |
| Schlumberger Holdings Limited | 2947 |
65 |
| Prad Research and Development Limited | 2696 |
60 |
| ConocoPhillips Company | 1657 |
53 |
| ExxonMobil Upstream Research Company | 2525 |
52 |
| Weatherford Technology Holdings, LLC | 2135 |
50 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
49 |
| Landmark Graphics Corporation | 1526 |
48 |
| Chevron U.S.A. Inc. | 3774 |
38 |
| Baker Hughes Holdings LLC | 3060 |
30 |
| Aramco Services Company | 3504 |
28 |
| Metrol Technology Limited | 85 |
27 |
| Cameron International Corporation | 1305 |
23 |
| Other owners | 1350 |