Light train control system applied to oversea freight railways
US-12589783-B2 · Mar 31, 2026 · US
Track circuits specially adapted for section blocking
Track circuits specially adapted for section blocking · 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 | B61L23/16 |
| Official title | Track circuits specially adapted for section blocking |
| Display label | Track circuits specially adapted for section blocking |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Switch control method and apparatus, and storage medium
US-12565249-B2 · Mar 3, 2026 · US
System and method for virtual block stick circuits
US-2025033679-A1 · Jan 30, 2025 · US
System and method for virtual block stick circuits
US-12116028-B2 · Oct 15, 2024 · US
Moving block train operation control method and system based on train autonomous positioning
US-11993298-B2 · May 28, 2024 · US
Section based safety functions for independent cart applications
US-11851093-B2 · Dec 26, 2023 · US
System and method for controlling a train travelling along a railway line
US-2023339525-A1 · Oct 26, 2023 · US
Light train control system applied to oversea freight railways
US-2023278603-A1 · Sep 7, 2023 · US
System and method for virtual block stick circuits
US-2023083828-A1 · Mar 16, 2023 · US
Switch control method and apparatus, and storage medium
US-2023031803-A1 · Feb 2, 2023 · US
Train control apparatus and train control method
US-11560166-B2 · Jan 24, 2023 · US
System and method for virtual block stick circuits
US-11511779-B2 · Nov 29, 2022 · US
Moving block train operation control method and system based on train autonomous positioning
US-2022315072-A1 · Oct 6, 2022 · US
Ground control device and protection zone control method
US-2022097745-A1 · Mar 31, 2022 · US
Section Based Safety Functions for Independent Cart Applications
US-2022073115-A1 · Mar 10, 2022 · US
System and method for virtual block stick circuits
US-2022032975-A1 · Feb 3, 2022 · US
Train control apparatus and train control method
US-2021403061-A1 · Dec 30, 2021 · US
Course control device, wireless train control system, on-board device, course control method, and recording medium
US-11208128-B2 · Dec 28, 2021 · US
Section based safety functions for independent cart applications
US-11186302-B2 · Nov 30, 2021 · US
Wireless train control system, ground control device, and wireless train control method
US-11040732-B2 · Jun 22, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61L23/16?
- CPC B61L23/16 is the Cooperative Patent Classification code for “Track circuits specially adapted for section blocking.”
- How many patents are filed under CPC B61L23/16 (Track circuits specially adapted for section blocking)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC B61L23/16 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).