- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 27/12 - Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
Patent holdings for IPC class E21C 27/12
Total number of patents in this class: 30
10-year publication summary
3
|
3
|
9
|
6
|
1
|
2
|
2
|
0
|
1
|
0
|
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 | 346 |
10 |
Sandvik Intellectual Property AB | 1542 |
6 |
Furukawa Rock Drill Co., Ltd. | 35 |
3 |
Sandvik Mining and Construction G.m.b.H. | 88 |
3 |
Element Six (UK) Limited | 203 |
3 |
Atlas Copco Craelius AB | 14 |
1 |
CMTE Development Limited | 42 |
1 |
Joy MM Delaware, Inc. | 57 |
1 |
Epiroc Aktiebolag | 29 |
1 |
Gainwell Engineering Global Pte. Ltd. | 12 |
1 |
Other owners | 0 |