Light emission power control apparatus and method
US-2019357337-A1 · Nov 21, 2019 · US
Track or rail movements
Track or rail movements · 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 | B61L23/047 |
| Official title | {Track or rail movements} |
| Display label | Track or rail movements |
| Total patents | 192 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 10 |
| 2017 | 15 |
| 2018 | 16 |
| 2019 | 20 |
| 2020 | 24 |
| 2021 | 13 |
| 2022 | 9 |
| 2023 | 22 |
| 2024 | 18 |
| 2025 | 33 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Asset failure prediction with location uncertainty
US-10414416-B2 · Sep 17, 2019 · US
Light emission power control apparatus and method
US-10349491-B2 · Jul 9, 2019 · US
Inertial track measurement system and methods
US-10336352-B2 · Jul 2, 2019 · US
Route monitoring system and method
US-2019193761-A1 · Jun 27, 2019 · US
Sensor synchronization apparatus and method
US-10322734-B2 · Jun 18, 2019 · US
Unmanned aerial vehicle system for inspecting railroad assets
US-2019054937-A1 · Feb 21, 2019 · US
Train suspension control systems and methods
US-10207723-B2 · Feb 19, 2019 · US
Digital context-aware data collection
US-2018251141-A1 · Sep 6, 2018 · US
Vehicle image data management system and method
US-10049298-B2 · Aug 14, 2018 · US
Route examination system
US-2018215400-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
Railway rail guide system
US-2018154914-A1 · Jun 7, 2018 · US
Monitor vehicle for a rail system and method thereof
US-2018148076-A1 · May 31, 2018 · US
Versine trolley-type equipment for inspecting track irregularity
US-2018143017-A1 · May 24, 2018 · US
Method of measuring condition of track using vehicle for commercial operation and vehicle for commercial operation for measuring condition of track
US-9963157-B2 · May 8, 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61L23/047?
- CPC B61L23/047 is the Cooperative Patent Classification code for “Track or rail movements.”
- How many patents are filed under CPC B61L23/047 (Track or rail movements)?
- Our database includes 192 publications tagged with this CPC code.
- Is patent activity under CPC B61L23/047 growing?
- Publication counts under this code: 18 in 2024 vs 33 in 2025 (latest complete years).