Illumination unit having an antifogging system
US-12584607-B2 · Mar 24, 2026 · US
specially adapted for signal lamps
specially adapted for signal lamps · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F21S45/37 |
| Official title | specially adapted for signal lamps |
| Display label | specially adapted for signal lamps |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vehicle lamp and vehicle
US-2025334247-A1 · Oct 30, 2025 · US
Illumination unit having an antifogging system
US-2025189098-A1 · Jun 12, 2025 · US
Exterior lighting water removal valve
US-12031695-B1 · Jul 9, 2024 · US
Lamp body
US-2023296220-A1 · Sep 21, 2023 · US
Air permeable cap for vehicle
US-11280470-B2 · Mar 22, 2022 · US
Modular front light LED driver messaging system
US-11153948-B2 · Oct 19, 2021 · US
Air permeable cap for vehicle
US-2021302005-A1 · Sep 30, 2021 · US
Notification device for communication in vehicle
US-2021300240-A1 · Sep 30, 2021 · US
Modular front light led driver messaging system
US-2021274615-A1 · Sep 2, 2021 · US
Ventilation member and lamp
US-10781994-B2 · Sep 22, 2020 · US
Rear view device with multi-piece backing plate
US-10723268-B2 · Jul 28, 2020 · US
Vehicle headlamp de-condensation
US-10627073-B2 · Apr 21, 2020 · US
Rear view device with mult-piece backing plate
US-2019344717-A1 · Nov 14, 2019 · US
Vehicle lamp
US-10462858-B2 · Oct 29, 2019 · US
Vehicle light assembly sensing moisture with light reflection
US-10429025-B2 · Oct 1, 2019 · US
Vehicle headlamp de-condensation
US-2019271449-A1 · Sep 5, 2019 · US
Vehicle body structure
US-10386036-B2 · Aug 20, 2019 · US
Vehicle light assembly having moisture sensing and heating
US-10323818-B2 · Jun 18, 2019 · US
Vehicle body structure
US-2019041023-A1 · Feb 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21S45/37?
- CPC F21S45/37 is the Cooperative Patent Classification code for “specially adapted for signal lamps.”
- How many patents are filed under CPC F21S45/37 (specially adapted for signal lamps)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F21S45/37 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).