- 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 47/017 - Protecting measuring instruments
Patent holdings for IPC class E21B 47/017
Total number of patents in this class: 362
10-year publication summary
14
|
20
|
23
|
25
|
45
|
35
|
62
|
49
|
34
|
10
|
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 |
80 |
Schlumberger Technology Corporation | 9690 |
20 |
Saudi Arabian Oil Company | 11322 |
19 |
Evolution Engineering Inc. | 313 |
18 |
Baker Hughes Oilfield Operations, LLC | 1885 |
11 |
Schlumberger Canada Limited | 6913 |
7 |
Baker Hughes Incorporated | 5689 |
7 |
Aramco Services Company | 3504 |
7 |
Sanvean Technologies LLC | 39 |
7 |
Baker Hughes Holdings LLC | 3060 |
7 |
Rig Technologies International Pty Ltd | 15 |
7 |
Schlumberger Technology B.v. | 4951 |
6 |
China Petroleum & Chemical Corporation | 1623 |
6 |
Institute of Geology and Geophysics, Chinese Academy of Sciences | 276 |
6 |
Merlin Technology, Inc. | 165 |
6 |
Services Petroliers Schlumberger | 5426 |
6 |
Baker Hughes, a GE Company, LLC | 2171 |
6 |
ExxonMobil Upstream Research Company | 2525 |
5 |
Rime Downhole Technologies, LLC | 26 |
4 |
California Institute of Technology | 3884 |
3 |
Other owners | 124 |