Method and arrangement for fault detection in a switch system
US-2019329807-A1 · Oct 31, 2019 · US
for monitoring the mechanical state of the route
for monitoring the mechanical state of the route · 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 | B61L23/04 |
| Official title | for monitoring the mechanical state of the route |
| Display label | for monitoring the mechanical state of the route |
| Total patents | 189 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 15 |
| 2017 | 20 |
| 2018 | 17 |
| 2019 | 28 |
| 2020 | 21 |
| 2021 | 22 |
| 2022 | 15 |
| 2023 | 16 |
| 2024 | 13 |
| 2025 | 16 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Distributed Fibre Optic Sensing for In-Train Forces Monitoring
US-2019225250-A1 · Jul 25, 2019 · US
Unmanned aerial vehicle system for inspecting railroad assets
US-2019054937-A1 · Feb 21, 2019 · US
Wobble detection device
US-2018309929-A1 · Oct 25, 2018 · US
Device for creating construction gauge measurement diagram, device for creating construction gauge measurement diagram data, and method for creating construction gauge measurement diagram
US-10093332-B2 · Oct 9, 2018 · US
Track circuit mechanical joint integrity checker
US-10093329-B2 · Oct 9, 2018 · US
Method for the maintenance of a ground-level power supply device for a tram-like vehicle
US-2018215401-A1 · Aug 2, 2018 · US
Light emission power control apparatus and method
US-2018220512-A1 · Aug 2, 2018 · US
Route Examination System And Method
US-2018203459-A1 · Jul 19, 2018 · US
Automated wayside asset monitoring with optical imaging and visualization
US-2018127006-A1 · May 10, 2018 · US
Ground-based mobile maintenance facilities for unmanned aerial vehicles
US-9950814-B1 · Apr 24, 2018 · US
Light emission power control apparatus and method
US-9950720-B2 · Apr 24, 2018 · US
Sensor synchronization apparatus and method
US-2018079434-A1 · Mar 22, 2018 · US
Route examination system and method
US-9921584-B2 · Mar 20, 2018 · US
Aerial camera system and method for determining size parameters of vehicle systems
US-9919723-B2 · Mar 20, 2018 · US
System and method for inspecting a route during movement of a vehicle system over the route
US-9908543-B2 · Mar 6, 2018 · US
Event recorder with configurable alarm/event monitoring
US-9908542-B2 · Mar 6, 2018 · US
Rail vehicle event triggering system and method
US-9908546-B2 · Mar 6, 2018 · US
Aerial camera system and method for identifying route-related hazards
US-9873442-B2 · Jan 23, 2018 · US
System and method for testing track circuits
US-9862395-B2 · Jan 9, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61L23/04?
- CPC B61L23/04 is the Cooperative Patent Classification code for “for monitoring the mechanical state of the route.”
- How many patents are filed under CPC B61L23/04 (for monitoring the mechanical state of the route)?
- Our database includes 189 publications tagged with this CPC code.
- Is patent activity under CPC B61L23/04 growing?
- Publication counts under this code: 13 in 2024 vs 16 in 2025 (latest complete years).