- 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 23/10 - Tools specially adapted therefor
Patent holdings for IPC class E21B 23/10
Total number of patents in this class: 190
10-year publication summary
|
18
|
13
|
16
|
14
|
27
|
22
|
16
|
9
|
9
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20769 |
22 |
| Saudi Arabian Oil Company | 12891 |
17 |
| DYNAenergetics Europe GmbH | 244 |
11 |
| Packers Plus Energy Services Inc. | 121 |
7 |
| Schlumberger Technology Corporation | 10641 |
6 |
| NCS Multistage Inc. | 177 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2273 |
6 |
| Advanced Upstream Ltd. | 40 |
6 |
| Aramco Services Company | 3921 |
5 |
| ExxonMobil Upstream Research Company | 2411 |
5 |
| Hydrashock, L.L.C. | 7 |
4 |
| Schlumberger Canada Limited | 7244 |
3 |
| Schlumberger Technology B.v. | 5154 |
3 |
| Weatherford Technology Holdings, LLC | 2012 |
3 |
| Australian Mud Company Pty Ltd | 16 |
3 |
| Services Petroliers Schlumberger | 5763 |
3 |
| Thru Tubing Solutions, Inc. | 375 |
3 |
| Perigon AS | 5 |
3 |
| Baker Hughes Incorporated | 5281 |
2 |
| ConocoPhillips Company | 1676 |
2 |
| Other owners | 70 |