Method and apparatus for measuring magnetic field intensity in high-temperature superconducting maglev transportation systems
US-12282074-B1 · Apr 22, 2025 · US
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Railway inspection trolleys
Railway inspection trolleys · 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 | B61D15/08 |
| Official title | Railway inspection trolleys |
| Display label | Railway inspection trolleys |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 1 |
| 2022 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Subway tunnel intelligent monitoring method and system
US-12179814-B2 · Dec 31, 2024 · US
Subway tunnel intelligent monitoring method and system
US-2024351623-A1 · Oct 24, 2024 · US
Measuring system and method for measuring the elasticity of an overhead line of a track
US-2024043048-A1 · Feb 8, 2024 · US
Signal redundancy control system and method used for turnout system and computer readable storage medium
US-11501644-B2 · Nov 15, 2022 · US
Work vehicle for maintenance of an electrical catenary
US-10632864-B2 · Apr 28, 2020 · US
Signal redundancy control system and method used for turnout system and computer readable storage medium
US-2019340930-A1 · Nov 7, 2019 · US
Versine trolley-type equipment for inspecting track irregularity
US-10429180-B2 · Oct 1, 2019 · US
Versine trolley-type equipment for inspecting track irregularity
US-2018143017-A1 · May 24, 2018 · US
Work vehicle for maintenance of an electrical catenary
US-2018009334-A1 · Jan 11, 2018 · US