- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 23/06 - Control, warning or like safety means along the route or between vehicles or trains for warning men working on the route
Patent holdings for IPC class B61L 23/06
Total number of patents in this class: 149
10-year publication summary
|
17
|
14
|
17
|
8
|
21
|
18
|
7
|
15
|
11
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Harsco Technologies LLC | 148 |
22 |
| Metrom Rail, LLC | 51 |
15 |
| STC, Inc. | 55 |
9 |
| Siemens AG | 24561 |
6 |
| Miller Felpax Corporation | 22 |
6 |
| BNSF Railway Company | 413 |
4 |
| Railware, Inc. | 5 |
4 |
| Mitsubishi Electric Corporation | 45811 |
3 |
| Bombardier Transportation GmbH | 647 |
3 |
| Railserve, Inc. | 41 |
3 |
| Westinghouse Air Brake Technologies Corporation | 504 |
3 |
| Siemens Mobility Limited | 36 |
3 |
| Transportation IP Holdings, LLC | 926 |
3 |
| M.B. Broekhuis Beheer B.V. | 4 |
3 |
| Mrnp Holding B.V. | 4 |
3 |
| Hitachi, Ltd. | 15434 |
2 |
| Thales Canada Inc. | 105 |
2 |
| CSX Transportation, Inc. | 7 |
2 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 413 |
2 |
| Willowglen Systems Inc. | 11 |
2 |
| Other owners | 49 |