- 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: 191
10-year publication summary
|
13
|
16
|
14
|
27
|
22
|
16
|
9
|
9
|
16
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21230 |
20 |
| Saudi Arabian Oil Company | 13948 |
18 |
| DYNAenergetics Europe GmbH | 258 |
12 |
| Packers Plus Energy Services Inc. | 119 |
7 |
| Schlumberger Technology Corporation | 11522 |
6 |
| Aramco Services Company | 4162 |
6 |
| NCS Multistage Inc. | 173 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2464 |
6 |
| ExxonMobil Upstream Research Company | 2334 |
5 |
| Thru Tubing Solutions, Inc. | 394 |
4 |
| Allamon Tool Company, Inc. | 5 |
4 |
| ExxonMobil Technology and Engineering Company | 15 |
4 |
| Schlumberger Canada Limited | 7564 |
3 |
| Schlumberger Technology B.v. | 5269 |
3 |
| Weatherford Technology Holdings, LLC | 2069 |
3 |
| Australian Mud Company Pty Ltd | 16 |
3 |
| Services Petroliers Schlumberger | 5979 |
3 |
| Perigon AS | 5 |
3 |
| Hydrashock, L.L.C. | 6 |
3 |
| Torsch Inc. | 41 |
3 |
| Other owners | 69 |