- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 21/04 - Special fastenings, joint constructions, or tie-rods
Patent holdings for IPC class E01B 21/04
Total number of patents in this class: 7
10-year publication summary
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0
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1
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0
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0
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0
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0
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2
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Progress Rail Services Corp | 234 |
1 |
| EV IP LP | 26 |
1 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 418 |
1 |
| Vossloh-Werke GmbH | 89 |
1 |
| edilon sedra GmbH | 7 |
1 |
| Carpet Track Ltd | 2 |
1 |
| China Railway Shanhaiguan Bridge Group Corporation Limited | 8 |
1 |
| Other owners | 0 |