- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 3/28 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
Patent holdings for IPC class E01B 3/28
Total number of patents in this class: 50
10-year publication summary
|
0
|
5
|
7
|
1
|
0
|
2
|
1
|
2
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Regents of the University of Michigan | 5016 |
2 |
| Administrador de Infraestructuras Ferroviarias (adif) | 12 |
2 |
| Fundacion Cidaut | 26 |
2 |
| Getzner Werkstoffe Holding GmbH | 90 |
2 |
| Korea Railroad Research Institute | 185 |
2 |
| Pandrol Limited | 83 |
2 |
| RAIL.ONE GmbH | 17 |
2 |
| Sener, Ingenieria y Sistemas, S.A. | 43 |
2 |
| Universidad Politecnica de Madrid | 305 |
2 |
| Voestalpine Railway Systems Nortrak LLC | 53 |
2 |
| Sateba France | 2 |
2 |
| Arkema France | 4251 |
1 |
| edilon)(sedra B.V. | 18 |
1 |
| King Fahd University of Petroleum and Minerals | 1587 |
1 |
| Korea Institute of Construction Technology | 72 |
1 |
| Nisshinbo Chemical Inc. | 148 |
1 |
| Pacadar S.A. | 14 |
1 |
| Politechnika Warszawska | 89 |
1 |
| Sol Solution | 27 |
1 |
| Sonneville AG | 15 |
1 |
| Other owners | 19 |