- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 25/16 - Machines slitting solely by one or more rotating saws, cutting discs, or wheels
Patent holdings for IPC class E21C 25/16
Total number of patents in this class: 72
10-year publication summary
|
4
|
7
|
19
|
6
|
6
|
6
|
2
|
3
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 347 |
30 |
| Sandvik Intellectual Property AB | 1492 |
9 |
| Element Six (UK) Limited | 211 |
8 |
| Element Six GmbH | 105 |
3 |
| Sandvik Mining and Construction G.m.b.H. | 91 |
3 |
| Joy Global Underground Mining LLC | 3 |
3 |
| Caterpillar Global Mining Europe GmbH | 85 |
2 |
| Epiroc Rock Drills Aktiebolag | 507 |
2 |
| Caterpillar Inc. | 9509 |
1 |
| California Institute of Technology | 3969 |
1 |
| Caterpillar Paving Products Inc. | 668 |
1 |
| China University of Mining and Technology, Beijing | 89 |
1 |
| CMTE Development Limited | 39 |
1 |
| Joy MM Delaware, Inc. | 56 |
1 |
| Nanjing Chervon Industry Co., Ltd. | 1035 |
1 |
| Northeastern University | 537 |
1 |
| Shenzhen University | 1632 |
1 |
| Tu Bergakademie Freiberg | 13 |
1 |
| de Beers Group Services Proprietary Limited | 1 |
1 |
| Gyeongdo Corporation | 2 |
1 |
| Other owners | 0 |