- 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 47/017 - Protecting measuring instruments
Patent holdings for IPC class E21B 47/017
Total number of patents in this class: 429
10-year publication summary
|
20
|
23
|
25
|
46
|
35
|
64
|
49
|
37
|
30
|
38
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20901 |
88 |
| Schlumberger Technology Corporation | 10727 |
28 |
| Saudi Arabian Oil Company | 13185 |
26 |
| Evolution Engineering Inc. | 301 |
16 |
| Baker Hughes Oilfield Operations, LLC | 2305 |
13 |
| Aramco Services Company | 3976 |
9 |
| Schlumberger Canada Limited | 7296 |
7 |
| Baker Hughes Incorporated | 5241 |
7 |
| Merlin Technology, Inc. | 161 |
7 |
| Baker Hughes Holdings LLC | 3006 |
7 |
| Rig Technologies International Pty Ltd | 15 |
7 |
| China Petroleum & Chemical Corporation | 1908 |
6 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 326 |
6 |
| Sanvean Technologies LLC | 38 |
6 |
| Services Petroliers Schlumberger | 5787 |
6 |
| Baker Hughes, a GE Company, LLC | 2112 |
6 |
| Schlumberger Technology B.v. | 5165 |
5 |
| ExxonMobil Upstream Research Company | 2397 |
5 |
| Hephae Energy Technology | 5 |
5 |
| National Oilwell Varco, L.P. | 1669 |
4 |
| Other owners | 165 |