- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 3/38 - Longitudinal sleepersLongitudinal sleepers integral or combined with tie-rodsCombined longitudinal and transverse sleepersLayers of concrete supporting both rails
Patent holdings for IPC class E01B 3/38
Total number of patents in this class: 15
10-year publication summary
|
4
|
2
|
3
|
0
|
1
|
1
|
0
|
1
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1
|
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
|
|---|---|---|
| China Railway Siyuan Survey and Design Group Co., Ltd. | 69 |
3 |
| Alstom Holdings | 612 |
1 |
| Geotek, LLC | 13 |
1 |
| Gmundner Fertigteile Gesellschaft m.b.H. & Co. KG. | 20 |
1 |
| Ssl-schwellenwerk und Steuerungstechnik Linz GmbH | 3 |
1 |
| SYSTRA | 16 |
1 |
| Thyssenkrupp GFT Gleistechnik GmbH | 6 |
1 |
| The University of Nottingham | 326 |
1 |
| Beijing Jieshi-zhongkun Railway Technology Co., Ltd | 1 |
1 |
| BWB Consulting | 1 |
1 |
| Integ Solutions Ltd | 1 |
1 |
| Tram Research Limited | 2 |
1 |
| SYSTRA France | 4 |
1 |
| Other owners | 0 |