- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 23/04 - Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
Patent holdings for IPC class B61L 23/04
Total number of patents in this class: 1054
10-year publication summary
|
69
|
91
|
116
|
104
|
104
|
97
|
106
|
74
|
83
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility GmbH | 1805 |
87 |
| BNSF Railway Company | 493 |
83 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 426 |
31 |
| GE Global Sourcing LLC | 879 |
30 |
| Mitsubishi Electric Corporation | 47416 |
22 |
| Siemens AG | 24337 |
20 |
| Tetra Tech, Inc. | 107 |
20 |
| Bombardier Transportation GmbH | 633 |
16 |
| Westinghouse Air Brake Technologies Corporation | 498 |
15 |
| Hitachi, Ltd. | 15835 |
14 |
| KB Signaling Inc. | 119 |
14 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10972 |
13 |
| Thales Management & Services Deutschland GmbH | 62 |
13 |
| Rail Vision Ltd | 22 |
12 |
| Transportation IP Holdings, LLC | 961 |
12 |
| ENSCO, Inc. | 57 |
11 |
| Wabtec Holding Corp. | 356 |
11 |
| Konux GmbH | 32 |
11 |
| General Electric Company | 13789 |
10 |
| Alstom Holdings | 620 |
10 |
| Other owners | 599 |