- 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: 1116
10-year publication summary
|
69
|
98
|
125
|
115
|
116
|
110
|
122
|
81
|
96
|
70
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 557 |
95 |
| Siemens Mobility GmbH | 1893 |
91 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 438 |
32 |
| GE Global Sourcing LLC | 861 |
29 |
| Mitsubishi Electric Corporation | 48351 |
22 |
| Siemens AG | 23956 |
21 |
| Tetra Tech, Inc. | 109 |
20 |
| KB Signaling Inc. | 128 |
17 |
| Hitachi, Ltd. | 16206 |
16 |
| Bombardier Transportation GmbH | 559 |
16 |
| Westinghouse Air Brake Technologies Corporation | 486 |
14 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11130 |
13 |
| Thales Management & Services Deutschland GmbH | 61 |
13 |
| Transportation IP Holdings, LLC | 1009 |
13 |
| Rail Vision Ltd | 22 |
12 |
| Konux GmbH | 32 |
12 |
| Alstom Holdings | 630 |
11 |
| ENSCO, Inc. | 53 |
11 |
| Wabtec Holding Corp. | 338 |
11 |
| General Electric Company | 13982 |
10 |
| Other owners | 637 |