- All sections
- E - Fixed constructions
- E01B - Permanent way; permanent-way tools; machines for making railways of all kinds
- E01B 3/38 - Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers; Layers of concrete supporting both rails
Patent holdings for IPC class E01B 3/38
Total number of patents in this class: 17
10-year publication summary
|
1
|
4
|
2
|
3
|
0
|
1
|
1
|
0
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gmundner Fertigteile Gesellschaft m.b.H. & Co. KG. | 24 |
3 |
| China Railway Siyuan Survey and Design Group Co., Ltd. | 66 |
3 |
| Alstom Transport Technologies | 566 |
1 |
| Geotek, LLC | 9 |
1 |
| Ssl-schwellenwerk und Steuerungstechnik Linz GmbH | 3 |
1 |
| SYSTRA | 18 |
1 |
| Thyssenkrupp GFT Gleistechnik GmbH | 8 |
1 |
| The University of Nottingham | 331 |
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 |