- 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: 198
10-year publication summary
|
19
|
14
|
4
|
6
|
9
|
12
|
7
|
11
|
6
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 837 |
26 |
| Komatsu Ltd. | 4618 |
15 |
| China University of Mining and Technology | 1271 |
12 |
| Joy Global Underground Mining LLC | 352 |
9 |
| Technological Resources Pty. Limited | 449 |
8 |
| Epiroc Rock Drills Aktiebolag | 557 |
8 |
| Anhui University of Science and Technology | 189 |
5 |
| Caterpillar Inc. | 9730 |
4 |
| ABB Schweiz AG | 7162 |
4 |
| Conveyor Manufacturers Australia Pty Ltd | 7 |
4 |
| Russell Mineral Equipment Pty Ltd | 72 |
3 |
| The University of Tokyo | 4247 |
3 |
| Vale S.A. | 272 |
3 |
| Underground Extraction Technologies Pty Ltd | 17 |
3 |
| Xuzhou Kerui Mining Technology Co., Ltd. | 10 |
3 |
| RIINO Inc. | 8 |
3 |
| Commonwealth Scientific and Industrial Research Organisation | 1664 |
2 |
| Hazemag & EPR GmbH | 24 |
2 |
| Macdonald, Dettwiler and Associates Inc. | 145 |
2 |
| Modular Mining Systems, Inc. | 88 |
2 |
| Other owners | 77 |