- All sections
- B - Performing operations; transporting
- B61L - Guiding railway traffic; ensuring the safety of railway traffic
- B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
Patent holdings for IPC class B61L 23/04
Total number of patents in this class: 915
10-year publication summary
|
58
|
68
|
69
|
98
|
123
|
115
|
113
|
108
|
106
|
27
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility GmbH | 1550 |
69 |
| BNSF Railway Company | 328 |
58 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 385 |
30 |
| GE Global Sourcing LLC | 944 |
30 |
| Alstom Transport Technologies | 566 |
23 |
| Siemens AG | 24990 |
21 |
| Mitsubishi Electric Corporation | 43934 |
21 |
| Tetra Tech, Inc. | 107 |
18 |
| Bombardier Transportation GmbH | 682 |
16 |
| General Electric Company | 18133 |
14 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
13 |
| Rail Vision Ltd | 22 |
13 |
| Westinghouse Air Brake Technologies Corporation | 521 |
13 |
| Thales Management & Services Deutschland GmbH | 63 |
13 |
| Konux GmbH | 32 |
13 |
| Hitachi, Ltd. | 16452 |
12 |
| ENSCO, Inc. | 59 |
12 |
| Wabtec Holding Corp. | 407 |
12 |
| Transportation IP Holdings, LLC | 843 |
12 |
| Avante International Technology, Inc. | 29 |
10 |
| Other owners | 492 |