- 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 6/04 - Separate drives for percussion and rotation
Patent holdings for IPC class E21B 6/04
Total number of patents in this class: 53
10-year publication summary
|
3
|
7
|
7
|
3
|
3
|
3
|
4
|
3
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 858 |
7 |
| Montabert | 59 |
6 |
| Saudi Arabian Oil Company | 13940 |
4 |
| Flexidrill Limited | 39 |
3 |
| Eurodrill GmbH | 34 |
2 |
| Reme Technologies, LLC | 16 |
2 |
| Strada Design Limited | 9 |
2 |
| TMS Co., Ltd. | 22 |
2 |
| Epiroc Rock Drills Aktiebolag | 613 |
2 |
| Sichuan DeepFast Oil Drilling Tools Co., Ltd | 2 |
2 |
| Hilti Aktiengesellschaft | 3572 |
1 |
| Bauer Maschinen GmbH | 237 |
1 |
| Bauer Spezialtiefbau GmbH | 113 |
1 |
| Celtic Machining Ltd. | 11 |
1 |
| China University of Mining and Technology | 1287 |
1 |
| Dalian University of Technology | 1571 |
1 |
| JW Tooling, LLC | 2 |
1 |
| Resonator AS | 4 |
1 |
| Southwest Petroleum University | 501 |
1 |
| Strada Design Limited | 2 |
1 |
| Other owners | 11 |