- All sections
- E - Fixed constructions
- E21D - Shaftstunnelsgallerieslarge underground chambers
- E21D 15/14 - Telescopic props
Patent holdings for IPC class E21D 15/14
Total number of patents in this class: 17
10-year publication summary
|
3
|
2
|
1
|
1
|
2
|
0
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FCI Holdings Delaware, LLC | 87 |
5 |
| Burrell Mining Products, Inc. | 5 |
2 |
| Cougar Can Company Pty Ltd. | 3 |
2 |
| Micon | 13 |
2 |
| AngloGold Ashanti Limited | 5 |
1 |
| Gesswein, ANDREAS Klaus | 8 |
1 |
| Resqtec-zumro B.V. | 2 |
1 |
| Tung, Liang | 8 |
1 |
| CrossCut Enterprises LLC | 2 |
1 |
| First Strut (Pty) Ltd t/a First Tech Group | 1 |
1 |
| Other owners | 0 |