- All sections
- B - Performing operations; transporting
- B61L - Guiding railway traffic; ensuring the safety of railway traffic
- B61L 15/02 - Head or tail indicators, e.g. light
Patent holdings for IPC class B61L 15/02
Total number of patents in this class: 18
10-year publication summary
|
2
|
2
|
1
|
1
|
2
|
2
|
3
|
1
|
0
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| J.W. Speaker, Corporation | 51 |
3 |
| Siemens AG Österreich | 316 |
2 |
| Siemens Mobility, Inc. | 329 |
2 |
| Siemens Mobility GmbH | 1550 |
2 |
| General Electric Company | 18133 |
1 |
| Progress Rail Services Corp | 225 |
1 |
| CRRC Tangshan Co., Ltd. | 239 |
1 |
| Dialight Corporation | 233 |
1 |
| Voith Patent GmbH | 2727 |
1 |
| Westinghouse Air Brake Technologies Corporation | 521 |
1 |
| Eyedog Israel Ltd. | 2 |
1 |
| Mirle Automation Corporation | 15 |
1 |
| Ground Transportation Systems Canada Inc. | 116 |
1 |
| Other owners | 0 |