- 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: 65
10-year publication summary
5
|
5
|
1
|
15
|
4
|
11
|
3
|
5
|
1
|
1
|
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 |
8 |
Underground Extraction Technologies Pty Ltd | 17 |
7 |
Superior Highwall Miners, Inc. | 8 |
5 |
Newcastle Innovation Limited | 87 |
4 |
Sandvik Intellectual Property AB | 1634 |
4 |
Nepean Conveyors Pty Ltd | 6 |
4 |
Joy MM Delaware, Inc. | 58 |
3 |
Boundary Equipment Co. Ltd. | 9 |
2 |
Caterpillar Global Mining Highwall Miners LLC | 4 |
2 |
China University of Mining and Technology | 1189 |
2 |
GE Global Sourcing LLC | 944 |
2 |
CPC Engineering Pty Ltd | 9 |
2 |
Anhui University of Science and Technology | 156 |
1 |
Bando Chemical Industries, Ltd. | 570 |
1 |
DW Technologies Pty Ltd | 3 |
1 |
Fenner Dunlop Americas, Inc. | 13 |
1 |
Jack Kennedy Metal Products & Buildings, Inc. | 37 |
1 |
RAG Aktiengesellschaft | 33 |
1 |
SunCor Energy Inc. | 838 |
1 |
Terra Nova Technologies, Inc. | 1 |
1 |
Other owners | 12 |