- All sections
- B - Performing operationstransporting
- B61H - Brakes or other retarding devices specially adapted for rail vehiclesarrangement or disposition thereof in rail vehicles
- B61H 7/04 - Scotch-blocks, skids, or like track-engaging shoes attached to railway vehicles
Patent holdings for IPC class B61H 7/04
Total number of patents in this class: 18
10-year publication summary
|
2
|
1
|
0
|
3
|
0
|
0
|
2
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hillmar Industries Ltd. | 12 |
4 |
| Portal Crane Parts Ltd. | 8 |
3 |
| Metrolab | 24 |
2 |
| Siemens Mobility GmbH | 1875 |
2 |
| China University of Mining and Technology | 1310 |
1 |
| Knorr-Bremse Gesellschaft mit Beschränkter Haftung | 152 |
1 |
| MACK Rides GmbH & Co. KG | 114 |
1 |
| Unistrut International Corporation | 64 |
1 |
| Intrasys Innovative Transportsysteme GmbH | 1 |
1 |
| Ralf Schwarzer Verkehrstechnik GmbH | 2 |
1 |
| Xiangtan Hengxin Industrial Co., Ltd | 3 |
1 |
| Other owners | 0 |