- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 13/02 - Transport specially adapted to underground conditions in galleries
Patent holdings for IPC class E21F 13/02
Total number of patents in this class: 110
10-year publication summary
8
|
18
|
8
|
10
|
7
|
9
|
10
|
5
|
3
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sandvik Mining and Construction Oy | 703 |
16 |
Sandvik Intellectual Property AB | 1634 |
12 |
Joy Global Underground Mining LLC | 331 |
12 |
Komatsu Ltd. | 4265 |
10 |
Underground Extraction Technologies Pty Ltd | 17 |
7 |
The University of Tokyo | 3903 |
5 |
Minrail Inc. | 5 |
3 |
Russell Mineral Equipment Pty Ltd | 69 |
3 |
Sandvik Mining and Construction G.m.b.H. | 85 |
3 |
Sandvik Mining and Construction Materials Handling GmbH & Co KG | 7 |
3 |
Superior Highwall Miners, Inc. | 8 |
2 |
Torex Gold Resources Inc. | 6 |
2 |
Epiroc Rock Drills Aktiebolag | 405 |
2 |
Continental Global Material Handling Inc. | 23 |
2 |
Continental Global Material Handling LLC | 24 |
2 |
Bouygues Travaux Publics | 30 |
1 |
Caterpillar Global Mining Highwall Miners LLC | 4 |
1 |
Caterpillar Underground Mining Pty. Ltd. | 57 |
1 |
Dux Machinery Corporation | 6 |
1 |
Joy Global Longview Operations LLC | 13 |
1 |
Other owners | 21 |