- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 13/08 - Shifting conveyors or other transport devices from one location at the working face to another
Patent holdings for IPC class E21F 13/08
Total number of patents in this class: 57
10-year publication summary
|
4
|
1
|
8
|
3
|
5
|
3
|
4
|
0
|
2
|
0
|
| 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 |
8 |
| Underground Extraction Technologies Pty Ltd | 17 |
7 |
| Newcastle Innovation Limited | 87 |
4 |
| Sandvik Intellectual Property AB | 1476 |
4 |
| Joy MM Delaware, Inc. | 56 |
3 |
| Nepean Conveyors Pty Ltd | 6 |
3 |
| Boundary Equipment Co. Ltd. | 9 |
2 |
| Caterpillar Global Mining Highwall Miners LLC | 4 |
2 |
| China University of Mining and Technology | 1265 |
2 |
| GE Global Sourcing LLC | 888 |
2 |
| CPC Engineering Pty Ltd | 10 |
2 |
| Anhui University of Science and Technology | 188 |
1 |
| Bando Chemical Industries, Ltd. | 585 |
1 |
| DW Technologies Pty Ltd | 3 |
1 |
| Fenner Dunlop Americas, Inc. | 13 |
1 |
| Jack Kennedy Metal Products & Buildings, Inc. | 34 |
1 |
| RAG Aktiengesellschaft | 31 |
1 |
| SunCor Energy Inc. | 744 |
1 |
| Terra Nova Technologies, Inc. | 1 |
1 |
| The University of Newcastle | 11 |
1 |
| Other owners | 9 |