- 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 15/04 - Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
Patent holdings for IPC class E21B 15/04
Total number of patents in this class: 181
10-year publication summary
|
4
|
4
|
15
|
18
|
18
|
16
|
10
|
16
|
6
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 838 |
16 |
| TT Technologies, Inc. | 151 |
14 |
| Black & Decker, Inc. | 2406 |
12 |
| Caterpillar Global Mining Equipment LLC | 162 |
10 |
| Halliburton Energy Services, Inc. | 20991 |
9 |
| Schlumberger Technology Corporation | 10930 |
7 |
| Vermeer Manufacturing Company | 640 |
7 |
| National Oilwell Varco, L.P. | 1690 |
5 |
| Epiroc Rock Drills Aktiebolag | 537 |
5 |
| Itrec B.V. | 502 |
4 |
| Quanta Associates, L.P. | 426 |
4 |
| Epiroc Drilling Solutions, LLC | 39 |
4 |
| Atlas Copco Rock Drills AB | 141 |
3 |
| The Charles Machine Works, Inc. | 407 |
3 |
| Tech Mining Pty Ltd | 4 |
3 |
| Resemin S.A. | 5 |
3 |
| Longyear TM, Inc. | 100 |
2 |
| University of Surrey | 215 |
2 |
| Olitek Pty Ltd | 9 |
2 |
| Beretta Alfredo S.r.l. | 5 |
2 |
| Other owners | 64 |