- 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: 52
10-year publication summary
|
4
|
4
|
1
|
1
|
2
|
3
|
0
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction G.m.b.H. | 94 |
3 |
| Eaton Intelligent Power Limited | 6236 |
3 |
| Buckaroos, Inc. | 16 |
2 |
| China University of Mining and Technology | 1308 |
2 |
| ERICO International Corporation | 266 |
2 |
| Pennsy Corporation | 45 |
2 |
| Thomas & Betts International LLC | 376 |
2 |
| E. I. du Pont de Nemours and Company | 3542 |
1 |
| The Boeing Company | 20160 |
1 |
| Seiko Epson Corporation | 20248 |
1 |
| The United States of America as represented by the Secretary of the Navy | 2856 |
1 |
| Alstom Holdings | 630 |
1 |
| Hilti Aktiengesellschaft | 3662 |
1 |
| ABC Industries, Inc. | 45 |
1 |
| AngloGold Ashanti Limited | 5 |
1 |
| Arlington Industries, Inc. | 159 |
1 |
| Armacell Enterprise GmbH & Co. KG | 159 |
1 |
| Bendix Spicer Foundation Brake LLC | 157 |
1 |
| Bouygues Travaux Publics | 29 |
1 |
| BSH Hausgeräte GmbH | 5623 |
1 |
| Other owners | 23 |