Maintenance apparatus, maintenance system, and maintenance method
US-12534116-B2 · Jan 27, 2026 · US
Details
Details · 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 | B61L1/181 |
| Official title | {Details} |
| Display label | Details |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 8 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Train simulator test set and method therefor
US-12509131-B2 · Dec 30, 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-2025091625-A1 · Mar 20, 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-2025050922-A1 · Feb 13, 2025 · US
System and method for virtual block stick circuits
US-2025033679-A1 · Jan 30, 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
Conductor Assembly for Rails
US-2024375693-A1 · Nov 14, 2024 · US
System and method for virtual block stick circuits
US-12116028-B2 · Oct 15, 2024 · US
Signal communication system
US-2024140508-A1 · May 2, 2024 · US
Shunt frequency check and transmit system
US-11945484-B2 · Apr 2, 2024 · US
Determination of train direction for bi-directional grade crossings
US-11938978-B2 · Mar 26, 2024 · US
System and method for virtual block stick circuits
US-2023083828-A1 · Mar 16, 2023 · US
Maintenance apparatus, maintenance system, and maintenance method
US-2023029300-A1 · Jan 26, 2023 · US
System and method for determining alignment for railway wayside signal applications
US-11543243-B2 · Jan 3, 2023 · US
Vital relay assembly for modular solid-state current-limiting
US-11539177-B2 · Dec 27, 2022 · 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
System and method for virtual block stick circuits
US-11511779-B2 · Nov 29, 2022 · US
Train simulator test set and method therefor
US-2022363297-A1 · Nov 17, 2022 · US
Determination of train direction for bi-directional grade crossings
US-2022315071-A1 · Oct 6, 2022 · US
Train simulator test set and method therefor
US-11427235-B2 · Aug 30, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61L1/181?
- CPC B61L1/181 is the Cooperative Patent Classification code for “Details.”
- How many patents are filed under CPC B61L1/181 (Details)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC B61L1/181 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).