- All sections
- E - Fixed constructions
- E01B - Permanent way; permanent-way tools; machines for making railways of all kinds
- E01B 3/28 - Transverse or longitudinal sleepers; Other 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: 46
10-year publication summary
|
1
|
6
|
0
|
5
|
7
|
1
|
0
|
2
|
1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pandrol Limited | 94 |
3 |
| The Regents of the University of Michigan | 4409 |
2 |
| Administrador de Infraestructuras Ferroviarias (adif) | 12 |
2 |
| Fundacion Cidaut | 27 |
2 |
| Getzner Werkstoffe Holding GmbH | 83 |
2 |
| Korea Railroad Research Institute | 175 |
2 |
| RAIL.ONE GmbH | 25 |
2 |
| Sener, Ingenieria y Sistemas, S.A. | 45 |
2 |
| Universidad Politecnica de Madrid | 296 |
2 |
| Voestalpine Railway Systems Nortrak LLC | 37 |
2 |
| Arkema France | 3790 |
1 |
| edilon)(sedra B.V. | 16 |
1 |
| King Fahd University of Petroleum and Minerals | 779 |
1 |
| Korea Institute of Construction Technology | 79 |
1 |
| Pacadar S.A. | 17 |
1 |
| Sonneville AG | 14 |
1 |
| Technische Universiteit Delft | 646 |
1 |
| University of South Carolina | 789 |
1 |
| Voestalpine Nortrak Inc. | 4 |
1 |
| PCM RAIL.ONE AG | 20 |
1 |
| Other owners | 15 |