- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 17/02 - Suspension devices for tubes or the like, e.g. for ventilating ducts
Patent holdings for IPC class E21F 17/02
Total number of patents in this class: 60
10-year publication summary
|
4
|
4
|
4
|
1
|
1
|
2
|
3
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction G.m.b.H. | 89 |
4 |
| Eaton Intelligent Power Limited | 6343 |
3 |
| Armacell Enterprise GmbH & Co. KG | 169 |
2 |
| Buckaroos, Inc. | 17 |
2 |
| China University of Mining and Technology | 1231 |
2 |
| ERICO International Corporation | 242 |
2 |
| Pennsy Corporation | 36 |
2 |
| Thomas & Betts International LLC | 443 |
2 |
| Food Grade Solutions, LLC | 15 |
2 |
| E. I. du Pont de Nemours and Company | 4246 |
1 |
| The Boeing Company | 19975 |
1 |
| Seiko Epson Corporation | 19080 |
1 |
| The United States of America as represented by the Secretary of the Navy | 2732 |
1 |
| Alstom Holdings | 515 |
1 |
| Carrier Corporation | 4426 |
1 |
| Hilti Aktiengesellschaft | 3404 |
1 |
| ABC Industries, Inc. | 42 |
1 |
| AngloGold Ashanti Limited | 6 |
1 |
| Arlington Industries, Inc. | 227 |
1 |
| Bendix Spicer Foundation Brake LLC | 170 |
1 |
| Other owners | 28 |