- All sections
- E - Fixed constructions
- E01B - Permanent way; permanent-way tools; machines for making railways of all kinds
- E01B 27/20 - Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators
Patent holdings for IPC class E01B 27/20
Total number of patents in this class: 56
10-year publication summary
|
4
|
5
|
10
|
4
|
7
|
8
|
6
|
6
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 385 |
32 |
| Franz Plasser Bahnbaumaschinen-industriegesellschaft m.b.H. | 87 |
6 |
| Harsco Technologies LLC | 162 |
6 |
| CRCC High-Tech Equipment Corporation Limited | 17 |
3 |
| Robel Bahnbaumaschinen GmbH | 114 |
2 |
| HP3 Real GmbH | 41 |
2 |
| Harsco Corporation | 56 |
1 |
| Hennecke GmbH | 32 |
1 |
| Matisa Materiel Industriel SA | 66 |
1 |
| Trackmate, LLC | 1 |
1 |
| CRRC Beijing Erqi Locomotive Co., Ltd. | 6 |
1 |
| Other owners | 0 |