- 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: 66
10-year publication summary
|
1
|
4
|
7
|
19
|
6
|
6
|
6
|
2
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 331 |
32 |
| Sandvik Intellectual Property AB | 1634 |
9 |
| Element Six (UK) Limited | 178 |
6 |
| Sandvik Mining and Construction G.m.b.H. | 85 |
3 |
| Caterpillar Global Mining Europe GmbH | 86 |
2 |
| Epiroc Rock Drills Aktiebolag | 405 |
2 |
| Caterpillar Inc. | 8877 |
1 |
| California Institute of Technology | 3884 |
1 |
| Caterpillar Paving Products Inc. | 628 |
1 |
| China University of Mining and Technology, Beijing | 66 |
1 |
| CMTE Development Limited | 43 |
1 |
| Element Six GmbH | 99 |
1 |
| Joy MM Delaware, Inc. | 58 |
1 |
| Nanjing Chervon Industry Co., Ltd. | 808 |
1 |
| Shenzhen University | 1544 |
1 |
| Tu Bergakademie Freiberg | 11 |
1 |
| de Beers Group Services Proprietary Limited | 1 |
1 |
| Gyeongdo Corporation | 2 |
1 |
| Other owners | 0 |