- 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 1/26 - Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by liquid pressure
Patent holdings for IPC class E21B 1/26
Total number of patents in this class: 58
10-year publication summary
|
2
|
3
|
3
|
3
|
1
|
2
|
6
|
8
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Atlas Copco Rock Drills AB | 160 |
10 |
| Sandvik Mining and Construction Oy | 784 |
5 |
| Mincon International Limited | 51 |
4 |
| Furukawa Rock Drill Co., Ltd. | 35 |
3 |
| Epiroc Rock Drills Aktiebolag | 456 |
3 |
| Obschestvo S Ogranichennoy Otvetstvennostyu Upravlyayushchaya Kompaniya "traditsiya" | 6 |
3 |
| Caterpillar Inc. | 9149 |
2 |
| Eurodrill GmbH | 26 |
2 |
| Southwest Petroleum University | 442 |
2 |
| Sunward Intelligent Equipment Co., Ltd. | 39 |
2 |
| Shandong Tianrui Heavy Industry Co, Ltd | 5 |
2 |
| Tri-tube Drilling Systems Pty Ltd | 2 |
2 |
| Halliburton Energy Services, Inc. | 20403 |
1 |
| Atlas Copco Construction Tools AB | 10 |
1 |
| Center Rock Inc. | 38 |
1 |
| China University of Petroleum (Beijing) | 271 |
1 |
| Doosan Infracore Co., Ltd. | 309 |
1 |
| Drillroc Pneumatic Pty Ltd | 7 |
1 |
| Everdigm Corp. | 12 |
1 |
| In, Suk Shin | 5 |
1 |
| Other owners | 10 |