Train interior monitoring system and train interior monitoring method
US-2026051172-A1 · Feb 19, 2026 · US
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Passenger-warning devices attached to vehicles; Safety devices for preventing accidents to passengers when entering or leaving vehicles
Passenger-warning devices attached to vehicles; Safety devices for preventing accidents to passengers when entering or leaving vehicles · 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 | B61K13/04 |
| Official title | Passenger-warning devices attached to vehicles; Safety devices for preventing accidents to passengers when entering or leaving vehicles |
| Display label | Passenger-warning devices attached to vehicles; Safety devices for preventing accidents to passengers when entering or leaving vehicles |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circulating cableway and method for operating a circulating cableway
US-2024208551-A1 · Jun 27, 2024 · US
System and method for controlling ride vehicle restraint via computer implemented process
US-11952020-B1 · Apr 9, 2024 · US
Door Controller for a Cable Car Vehicle
US-2023264721-A1 · Aug 24, 2023 · US
Communication system, processor, and carried object
US-2023174116-A1 · Jun 8, 2023 · US
Image display system and image display method
US-11394885-B2 · Jul 19, 2022 · US
Low profile gap mitigation device
US-11142226-B2 · Oct 12, 2021 · US
Door image display system and monitor
US-2021037215-A1 · Feb 4, 2021 · US
Monitoring system and monitoring method
US-10864927-B2 · Dec 15, 2020 · US
Image display system and image display method
US-2020213519-A1 · Jul 2, 2020 · US
Vehicle monitoring system, management device and monitoring method
US-10618529-B2 · Apr 14, 2020 · US
Method of displaying information and displaying system thereof
US-10614780-B2 · Apr 7, 2020 · US
Low Profile Gap Mitigation Device
US-2020070853-A1 · Mar 5, 2020 · US
Monitoring system and monitoring method
US-2020031373-A1 · Jan 30, 2020 · US
Method of displaying information and displaying system thereof
US-2019385573-A1 · Dec 19, 2019 · US
Alarming and unlocking device
US-10464524-B2 · Nov 5, 2019 · US
Vehicle monitoring system, management device and monitoring method
US-2019248383-A1 · Aug 15, 2019 · US
Alarming and unlocking device
US-2019023222-A1 · Jan 24, 2019 · US
Electronic apparatus, processing system, and processing program
US-2018194279-A1 · Jul 12, 2018 · US