- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 13/00 - Transport specially adapted to underground conditions
Patent holdings for IPC class E21F 13/00
Total number of patents in this class: 188
10-year publication summary
17
|
24
|
16
|
5
|
12
|
16
|
18
|
11
|
16
|
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 |
25 |
Komatsu Ltd. | 4265 |
15 |
China University of Mining and Technology | 1189 |
11 |
Joy Global Underground Mining LLC | 331 |
9 |
Technological Resources Pty. Limited | 444 |
8 |
Caterpillar Underground Mining Pty. Ltd. | 57 |
6 |
Epiroc Rock Drills Aktiebolag | 405 |
6 |
Conveyor Manufacturers Australia Pty Ltd | 7 |
4 |
ABB Schweiz AG | 6321 |
3 |
Anhui University of Science and Technology | 156 |
3 |
Russell Mineral Equipment Pty Ltd | 69 |
3 |
The University of Tokyo | 3903 |
3 |
Vale S.A. | 262 |
3 |
Underground Extraction Technologies Pty Ltd | 17 |
3 |
Xuzhou Kerui Mining Technology Co., Ltd. | 9 |
3 |
Caterpillar Inc. | 8877 |
2 |
Commonwealth Scientific and Industrial Research Organisation | 1652 |
2 |
Hazemag & EPR GmbH | 14 |
2 |
Macdonald, Dettwiler and Associates Inc. | 69 |
2 |
Modular Mining Systems, Inc. | 84 |
2 |
Other owners | 73 |