- All sections
- B - Performing operations; transporting
- B61L - Guiding railway traffic; ensuring the safety of railway traffic
- B61L 3/08 - Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically
Patent holdings for IPC class B61L 3/08
Total number of patents in this class: 34
10-year publication summary
|
2
|
6
|
4
|
7
|
1
|
2
|
1
|
4
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nippon Signal Co., Ltd. | 56 |
3 |
| GE Global Sourcing LLC | 909 |
3 |
| Mitsubishi Electric Corporation | 44851 |
2 |
| BYD Company Limited | 4320 |
2 |
| Metrom Rail, LLC | 50 |
2 |
| Mitsubishi Electric Research Laboratories, Inc. | 1040 |
2 |
| Progress Rail Locomotive Inc. | 307 |
2 |
| Siemens Mobility, Inc. | 341 |
2 |
| Transportation IP Holdings, LLC | 906 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8538 |
1 |
| Bayerische Motoren Werke Aktiengesellschaft | 13863 |
1 |
| Rockwell Automation Technologies, Inc. | 2654 |
1 |
| Siemens Industry, Inc. | 1430 |
1 |
| Murata Machinery, Ltd. | 1458 |
1 |
| New York Air Brake LLC | 262 |
1 |
| Westinghouse Air Brake Technologies Corporation | 512 |
1 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 198 |
1 |
| Traffic Control Technology Co., Ltd | 31 |
1 |
| CRRC Nanjing Puzhen Co., Ltd. | 96 |
1 |
| NAC Service, Inc. | 1 |
1 |
| Other owners | 3 |