- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 23/14 - Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
Patent holdings for IPC class B61L 23/14
Total number of patents in this class: 158
10-year publication summary
|
14
|
31
|
17
|
14
|
19
|
19
|
6
|
12
|
13
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15239 |
24 |
| Mitsubishi Electric Corporation | 44904 |
16 |
| The Nippon Signal Co., Ltd. | 56 |
8 |
| Kyosan Electric Mfg. Co., Ltd. | 170 |
7 |
| Siemens Mobility GmbH | 1644 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6243 |
6 |
| Avante International Technology, Inc. | 31 |
5 |
| Westinghouse Air Brake Technologies Corporation | 512 |
5 |
| Siemens AG | 24568 |
4 |
| CRRC Tangshan Co., Ltd. | 251 |
4 |
| Harsco Technologies LLC | 152 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8545 |
3 |
| Alstom Holdings | 510 |
3 |
| Thales Canada Inc. | 106 |
3 |
| BYD Company Limited | 4341 |
3 |
| its Technologies & Logistics, LLC | 16 |
3 |
| Cattron North America, Inc. | 140 |
3 |
| Transportation IP Holdings, LLC | 907 |
3 |
| Casco Signal Co., Ltd. | 121 |
3 |
| Ground Transportation Systems Canada Inc. | 58 |
3 |
| Other owners | 42 |