Computer implemented method for determining railway vehicle movement profile type of a railway vehicle movement profile and controller of a track circuit system
US-2025091625-A1 · Mar 20, 2025 · US
Use of direct current
Use of direct current · 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 | B61L1/185 |
| Official title | {Use of direct current} |
| Display label | Use of direct current |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Computer implemented method for determining railway vehicle movement profile type of a railway vehicle movement profile and controller of a track circuit system
US-2025050922-A1 · Feb 13, 2025 · US
Computer implemented method for determining railway vehicle movement profile type of a railway vehicle movement profile and controller of a track circuit system
US-12179815-B2 · Dec 31, 2024 · US
Railway detection system, railway infrastructure and method for detecting the presence of a railway vehicle
US-2024149931-A1 · May 9, 2024 · US
System for communicating vehicle information
US-11945482-B2 · Apr 2, 2024 · US
Method, system, computer-readable medium comprising software code for estimating parameters of railway track circuits, and related track circuit
US-11912322-B2 · Feb 27, 2024 · US
Track circuit with continued distance monitoring and broken rail protection
US-11866076-B2 · Jan 9, 2024 · US
Method, controller and track circuit for determining the relationship between a track-circuit transmitted current signal and a railway vehicle location on a railway track
US-11780482-B2 · Oct 10, 2023 · US
Method for determining a status of a track section of a railroad; associated apparatus and non-transitory computer readable medium
US-11702119-B2 · Jul 18, 2023 · US
Method and system for estimating temperature-related forces in railway lines
US-2023094944-A1 · Mar 30, 2023 · US
Method and controller for determining the relationship between a track-circuit transmitted current signal and a railway vehicle location on a railway track
US-11577763-B2 · Feb 14, 2023 · US
Computer implemented method for determining railway vehicle movement profile type of a railway vehicle movement profile and controller of a track circuit system
US-2022396298-A1 · Dec 15, 2022 · US
Method for determining a status of a track section of a railroad; associated apparatus and non-transitory computer readable medium
US-2022355841-A1 · Nov 10, 2022 · US
Method, controller and track circuit for determining the relationship between a track-circuit transmitted current signal and a railway vehicle location on a railway track
US-2022258781-A1 · Aug 18, 2022 · US
Method, system, computer-readable medium comprising software code for estimating parameters of railway track circuits, and related track circuit
US-2022185351-A1 · Jun 16, 2022 · US
Method and system for health assessment of a track circuit and/or of a track section
US-11260888-B2 · Mar 1, 2022 · US
System for communicating vehicle information
US-2021323592-A1 · Oct 21, 2021 · US
Method and controller for determining the relationship between a track-circuit transmitted current signal and a railway vehicle location on a railway track
US-2021276601-A1 · Sep 9, 2021 · US
Track circuit with continued distance monitoring and broken rail protection
US-2021139059-A1 · May 13, 2021 · US
Rail fracture detection device
US-10946879-B2 · Mar 16, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61L1/185?
- CPC B61L1/185 is the Cooperative Patent Classification code for “Use of direct current.”
- How many patents are filed under CPC B61L1/185 (Use of direct current)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC B61L1/185 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).