- 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 47/003 - Determining well or borehole volumes
Patent holdings for IPC class E21B 47/003
Total number of patents in this class: 157
10-year publication summary
9
|
5
|
6
|
6
|
12
|
24
|
29
|
17
|
10
|
2
|
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 |
19 |
Saudi Arabian Oil Company | 11322 |
18 |
Schlumberger Technology Corporation | 9690 |
14 |
Landmark Graphics Corporation | 1526 |
9 |
Chevron U.S.A. Inc. | 3774 |
9 |
Schlumberger Canada Limited | 6913 |
8 |
Services Petroliers Schlumberger | 5426 |
6 |
ExxonMobil Upstream Research Company | 2525 |
5 |
Schlumberger Technology B.v. | 4951 |
3 |
ConocoPhillips Company | 1657 |
3 |
Prad Research and Development Limited | 2696 |
3 |
SunCor Energy Inc. | 838 |
3 |
Equinor Energy AS | 475 |
3 |
Schlumberger Holdings Limited | 2947 |
2 |
Baker Hughes Incorporated | 5689 |
2 |
Geoquest Systems B.V. | 584 |
2 |
Aver Technologies, Inc. | 12 |
2 |
Baker Hughes Holdings LLC | 3060 |
2 |
Xecta Intelligent Production Services | 5 |
2 |
Totalenergies Onetech (previously Totalenergies One Tech) | 323 |
2 |
Other owners | 40 |