- 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: 112
10-year publication summary
|
8
|
19
|
16
|
18
|
11
|
12
|
10
|
6
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 331 |
26 |
| Caterpillar Global Mining Europe GmbH | 86 |
11 |
| Caterpillar Inc. | 8877 |
9 |
| Continental Global Material Handling Inc. | 23 |
6 |
| Continental Global Material Handling LLC | 24 |
6 |
| China University of Mining and Technology | 1189 |
5 |
| Komatsu Ltd. | 4265 |
4 |
| Bucyrus Europe GmbH | 32 |
4 |
| Austin Engineering Ltd. | 34 |
2 |
| Corporacion Nacional Del Cobre de Chile | 11 |
2 |
| The Mosaic Company | 165 |
2 |
| The University of Tokyo | 3903 |
2 |
| Conveyor Manufacturers Australia Pty Ltd | 7 |
2 |
| Bucyrus DBT Europe GmbH | 10 |
2 |
| GE Global Sourcing LLC | 944 |
2 |
| Bremhorst, John | 1 |
1 |
| Corporacion Nacional Del Cobre de Chile (codelco) | 2 |
1 |
| Hazemag & EPR GmbH | 14 |
1 |
| Instituto de Innovacion en Mineria y Metalurgia | 1 |
1 |
| Russell Mineral Equipment Pty Ltd | 69 |
1 |
| Other owners | 22 |