Self-diagnostic fault identification system for emergency lighting unit
US-2020408374-A1 · Dec 31, 2020 · US
Circuit arrangements for protecting against abnormal temperature
Circuit arrangements for protecting against abnormal temperature · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H05B47/28 |
| Official title | Circuit arrangements for protecting against abnormal temperature |
| Display label | Circuit arrangements for protecting against abnormal temperature |
| Total patents | 115 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 13 |
| 2019 | 9 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 8 |
| 2025 | 9 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lighting apparatus
US-2020337138-A1 · Oct 22, 2020 · US
Removable LED Module with Zonal Intensity Control
US-2020236759-A1 · Jul 23, 2020 · US
Lighting system and a method of estimating an end of life of at least one lamp thereof
US-10681787-B2 · Jun 9, 2020 · US
Programmable emergency lighting device including near-field communication
US-10624177-B2 · Apr 14, 2020 · US
Integrated digital lighting controller
US-10448484-B1 · Oct 15, 2019 · US
Lighting device and illuminating fixture
US-10440797-B2 · Oct 8, 2019 · US
Circuit module, circuit arrangement, light source and method for synchronizing driving of at least two electrical devices
US-2019306939-A1 · Oct 3, 2019 · US
Triac driving circuit and fixing apparatus having resistive elements in series with different characteristics for circuit protection
US-10433380-B2 · Oct 1, 2019 · US
Triac driving circuit and fixing apparatus having resistive elements in series with different characteristics for circuit protection
US-2019239301-A1 · Aug 1, 2019 · US
Multiple interface LED driver with inherent overvoltage protection
US-10356873-B1 · Jul 16, 2019 · US
Exterior aircraft light unit and method of disabling a light output of an exterior aircraft light unit
US-10299343-B2 · May 21, 2019 · US
Systems and methods for facilitating lighting device health management
US-2019037669-A1 · Jan 31, 2019 · US
Systems and methods for facilitating lighting device health management
US-10194511-B1 · Jan 29, 2019 · US
Open-mode protection device and electronic device having same
US-2018376550-A1 · Dec 27, 2018 · US
Lighting system and a method of estimating an end of life of at least one lamp thereof
US-2018302972-A1 · Oct 18, 2018 · US
LED driving device, illuminator, and liquid crystal display device
US-10068511-B2 · Sep 4, 2018 · US
Failure detection and alerting circuit for a differential mode surge protection device in an LED driver
US-10004123-B1 · Jun 19, 2018 · US
Programmable emergency lighting device including near-field communication
US-2018160513-A1 · Jun 7, 2018 · US
Multi-channel LED driver with overheating protection capabilities
US-9961742-B2 · May 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H05B47/28?
- CPC H05B47/28 is the Cooperative Patent Classification code for “Circuit arrangements for protecting against abnormal temperature.”
- How many patents are filed under CPC H05B47/28 (Circuit arrangements for protecting against abnormal temperature)?
- Our database includes 115 publications tagged with this CPC code.
- Is patent activity under CPC H05B47/28 growing?
- Publication counts under this code: 8 in 2024 vs 9 in 2025 (latest complete years).