- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 27/02 - Manual systems
Patent holdings for IPC class B61L 27/02
Total number of patents in this class: 13
10-year publication summary
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0
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4
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0
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3
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1
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1
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2
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1
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1
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 474 |
3 |
| Hitachi Rail STS USA, Inc. | 25 |
2 |
| Transportation IP Holdings, LLC | 944 |
2 |
| Meteorcomm LLC | 51 |
1 |
| Piper Networks, Inc. | 32 |
1 |
| Progress Rail Locomotive Inc. | 321 |
1 |
| GE Global Sourcing LLC | 888 |
1 |
| Cattron North America, Inc. | 139 |
1 |
| GE Global Sourcing | 2 |
1 |
| Other owners | 0 |