- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 13/06 - Transport specially adapted to underground conditions at or adjacent to the working face
Patent holdings for IPC class E21F 13/06
Total number of patents in this class: 120
10-year publication summary
|
18
|
15
|
18
|
11
|
12
|
8
|
7
|
3
|
6
|
3
|
| 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 | 347 |
28 |
| Caterpillar Global Mining Europe GmbH | 85 |
11 |
| Caterpillar Inc. | 9594 |
9 |
| Continental Global Material Handling Inc. | 23 |
6 |
| Continental Global Material Handling LLC | 25 |
6 |
| China University of Mining and Technology | 1259 |
5 |
| The Mosaic Company | 213 |
5 |
| Komatsu Ltd. | 4571 |
4 |
| Bucyrus Europe GmbH | 32 |
4 |
| Corporacion Nacional Del Cobre de Chile | 28 |
2 |
| The University of Tokyo | 4201 |
2 |
| Conveyor Manufacturers Australia Pty Ltd | 7 |
2 |
| Bucyrus DBT Europe GmbH | 10 |
2 |
| GE Global Sourcing LLC | 888 |
2 |
| Austin Engineering Ltd. | 40 |
1 |
| Corporacion Nacional Del Cobre de Chile (codelco) | 1 |
1 |
| Hazemag & EPR GmbH | 23 |
1 |
| Instituto de Innovacion en Mineria y Metalurgia | 1 |
1 |
| Russell Mineral Equipment Pty Ltd | 72 |
1 |
| Sandvik Intellectual Property AB | 1479 |
1 |
| Other owners | 26 |