Systems and methods for visual inspection of signal lights at railroad crossings
US-12354376-B2 · Jul 8, 2025 · US
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Light signals; Mechanisms associated therewith, e.g. blinders
Light signals; Mechanisms associated therewith, e.g. blinders · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B61L5/18 |
| Official title | Light signals; Mechanisms associated therewith, e.g. blinders |
| Display label | Light signals; Mechanisms associated therewith, e.g. blinders |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 5 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Autonomous sensing system for train
US-2025153751-A1 · May 15, 2025 · US
Systems and methods for visual inspection of signal lights at railroad crossings
US-2024331404-A1 · Oct 3, 2024 · US
System and method for determining alignment for railway wayside signal applications
US-11543243-B2 · Jan 3, 2023 · US
LED shielding and monitoring system and wayside LED signals
US-11273855-B2 · Mar 15, 2022 · US
Monitoring system, wayside LED signal, and method for monitoring a wayside LED signal
US-11161532-B2 · Nov 2, 2021 · US
Signal light assembly
US-11077872-B2 · Aug 3, 2021 · US
Signal light assembly
US-2021206404-A1 · Jul 8, 2021 · US
System and method for determining alignment for railway wayside signal applications
US-2021055101-A1 · Feb 25, 2021 · US
Led shielding and monitoring system and wayside led signals
US-2019329802-A1 · Oct 31, 2019 · US
Monitoring system, wayside led signal, and method for monitoring a wayside led signal
US-2019185034-A1 · Jun 20, 2019 · US
System, apparatus and method for mounting a device
US-10288218-B2 · May 14, 2019 · US
Field programmable gate array
US-10216566-B2 · Feb 26, 2019 · US
Method and system for LED based incandescent replacement module for railway signal
US-10173701-B2 · Jan 8, 2019 · US
Field Programmable Gate Array
US-2018113757-A1 · Apr 26, 2018 · US
Monitoring system, wayside LED signaling device, and method for monitoring a wayside LED signaling device
US-9610959-B2 · Apr 4, 2017 · US
Method and system for led based incandescent replacement module for railway signal
US-2016348877-A1 · Dec 1, 2016 · US
Monitoring system, wayside led signaling device, and method for monitoring a wayside led signaling device
US-2016347336-A1 · Dec 1, 2016 · US
System, apparatus and method for mounting a device
US-2016334055-A1 · Nov 17, 2016 · US
System and method for inspection of wayside rail equipment
US-9308925-B2 · Apr 12, 2016 · US