- All sections
- B - Performing operations; transporting
- B61L - Guiding railway traffic; ensuring the safety of railway traffic
- B61L 15/00 - Indicators provided on the vehicle or vehicle train for signalling purposes
Patent holdings for IPC class B61L 15/00
Total number of patents in this class: 1692
10-year publication summary
|
115
|
155
|
139
|
205
|
224
|
177
|
188
|
143
|
139
|
63
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility GmbH | 1550 |
199 |
| Siemens AG | 24990 |
106 |
| GE Global Sourcing LLC | 944 |
81 |
| Mitsubishi Electric Corporation | 43934 |
74 |
| Transportation IP Holdings, LLC | 843 |
69 |
| Westinghouse Air Brake Technologies Corporation | 521 |
65 |
| General Electric Company | 18133 |
45 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 566 |
37 |
| Amsted Rail Company, Inc. | 432 |
33 |
| Progress Rail Locomotive Inc. | 304 |
30 |
| Siemens Mobility, Inc. | 329 |
27 |
| New York Air Brake LLC | 261 |
26 |
| Progress Rail Services Corp | 225 |
23 |
| Alstom Transport Technologies | 566 |
21 |
| Bombardier Transportation GmbH | 682 |
19 |
| Metrom Rail, LLC | 47 |
19 |
| BNSF Railway Company | 328 |
17 |
| Wabtec Holding Corp. | 407 |
16 |
| Voith Patent GmbH | 2727 |
14 |
| Casco Signal Co., Ltd. | 94 |
14 |
| Other owners | 757 |