- 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: 196
10-year publication summary
|
14
|
4
|
6
|
9
|
12
|
7
|
11
|
6
|
9
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 861 |
27 |
| Komatsu Ltd. | 4658 |
15 |
| China University of Mining and Technology | 1292 |
12 |
| Joy Global Underground Mining LLC | 347 |
9 |
| Epiroc Rock Drills Aktiebolag | 619 |
9 |
| ABB Schweiz AG | 7441 |
6 |
| Anhui University of Science and Technology | 195 |
5 |
| Technological Resources Pty. Limited | 438 |
5 |
| Caterpillar Inc. | 10132 |
4 |
| Conveyor Manufacturers Australia Pty Ltd | 7 |
4 |
| Russell Mineral Equipment Pty Ltd | 74 |
3 |
| Sandvik Mining and Construction G.m.b.H. | 93 |
3 |
| The University of Tokyo | 4324 |
3 |
| Underground Extraction Technologies Pty Ltd | 17 |
3 |
| Xuzhou Kerui Mining Technology Co., Ltd. | 11 |
3 |
| Commonwealth Scientific and Industrial Research Organisation | 1658 |
2 |
| Hazemag & EPR GmbH | 24 |
2 |
| Macdonald, Dettwiler and Associates Inc. | 155 |
2 |
| Modular Mining Systems, Inc. | 91 |
2 |
| Nordic Minesteel Technologies Inc. | 37 |
2 |
| Other owners | 75 |