- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 21/00 - Station blocking between signal boxes in one yard
Patent holdings for IPC class B61L 21/00
Total number of patents in this class: 22
10-year publication summary
|
1
|
0
|
0
|
2
|
1
|
0
|
0
|
0
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ansaldo STS USA, Inc. | 38 |
3 |
| Siemens Mobility GmbH | 1750 |
3 |
| Harsco Technologies LLC | 146 |
2 |
| Siemens AG | 24352 |
1 |
| Australian Rail Track Corporation Ltd | 21 |
1 |
| Canadian National Railway Company | 156 |
1 |
| Jurislabs, LLC | 3 |
1 |
| Metrom Rail, LLC | 51 |
1 |
| Phase2 Concepts, Inc. | 1 |
1 |
| Xi'an Shiyun Transporation Equipment Co., Ltd. | 1 |
1 |
| AŽD Praha s.r.o. | 28 |
1 |
| GE Global Sourcing LLC | 886 |
1 |
| Alstom Holdings | 20 |
1 |
| Crsc Research & Design Institute Group Co., Ltd. | 134 |
1 |
| Thales Rail Signalling Solutions GmbH | 1 |
1 |
| Crsc Urban Rail Transit Technology Co., Ltd. | 7 |
1 |
| KB Signaling Inc. | 100 |
1 |
| Other owners | 0 |