- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 25/02 - Machines slitting solely by one or more percussive tools moved through the seam
Patent holdings for IPC class E21C 25/02
Total number of patents in this class: 8
10-year publication summary
|
6
|
5
|
0
|
2
|
0
|
2
|
1
|
0
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Epiroc Rock Drills Aktiebolag | 543 |
4 |
| Husqvarna Professional Outdoor Products Inc. | 10 |
1 |
| Joy MM Delaware, Inc. | 56 |
1 |
| Terminator IP Limited | 8 |
1 |
| Suhua Liu | 2 |
1 |
| Other owners | 0 |