- 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: 49
10-year publication summary
|
6
|
0
|
4
|
6
|
1
|
0
|
2
|
1
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pandrol Limited | 91 |
3 |
| The Regents of the University of Michigan | 4746 |
2 |
| Administrador de Infraestructuras Ferroviarias (adif) | 12 |
2 |
| Fundacion Cidaut | 27 |
2 |
| Getzner Werkstoffe Holding GmbH | 90 |
2 |
| Korea Railroad Research Institute | 177 |
2 |
| RAIL.ONE GmbH | 20 |
2 |
| Sener, Ingenieria y Sistemas, S.A. | 46 |
2 |
| Universidad Politecnica de Madrid | 301 |
2 |
| Voestalpine Railway Systems Nortrak LLC | 43 |
2 |
| Arkema France | 4168 |
1 |
| edilon)(sedra B.V. | 17 |
1 |
| King Fahd University of Petroleum and Minerals | 1272 |
1 |
| Korea Institute of Construction Technology | 76 |
1 |
| Nisshinbo Chemical Inc. | 139 |
1 |
| Pacadar S.A. | 14 |
1 |
| Politechnika Warszawska | 76 |
1 |
| Sonneville AG | 14 |
1 |
| Technische Universiteit Delft | 731 |
1 |
| University of South Carolina | 832 |
1 |
| Other owners | 18 |