Illumination unit having an antifogging system
US-12584607-B2 · Mar 24, 2026 · US
Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42)
Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42) · 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 | F21S45/20 |
| Official title | Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42) |
| Display label | Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42) |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 5 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vehicle lamp
US-12571515-B2 · Mar 10, 2026 · US
Motor vehicle with a lighting device and a condensation protection system
US-2026055871-A1 · Feb 26, 2026 · US
Temperature control module and headlight
US-12504146-B2 · Dec 23, 2025 · US
Vehicle lights, in particular motor vehicle headlights
US-2025369588-A1 · Dec 4, 2025 · US
Temperature control module and headlight
US-2025257860-A1 · Aug 14, 2025 · US
Vehicle lamp
US-2025237368-A1 · Jul 24, 2025 · US
Exterior lamps with system-based natural turbulation and anti-condensation
US-12338971-B1 · Jun 24, 2025 · US
Illumination unit having an antifogging system
US-2025189098-A1 · Jun 12, 2025 · US
Lens Cleaning System
US-2025115214-A1 · Apr 10, 2025 · US
Illuminant for vehicle headlamp
US-11982416-B2 · May 14, 2024 · US
Headlight with anti-condensation protection device
US-11965636-B2 · Apr 23, 2024 · US
Illuminant for Vehicle Headlamp
US-2024084989-A1 · Mar 14, 2024 · US
High beam and low beam switching device, vehicle lamp and vehicle
US-11745644-B2 · Sep 5, 2023 · US
Headlight with Anti-Condensation Protection Device
US-2022373157-A1 · Nov 24, 2022 · US
High beam and low beam switching device, vehicle lamp and vehicle
US-2022266745-A1 · Aug 25, 2022 · US
Head lamp for vehicle
US-11378249-B2 · Jul 5, 2022 · US
Head lamp for vehicle
US-2022034474-A1 · Feb 3, 2022 · US
Lighting fixture for vehicle
US-10851964-B2 · Dec 1, 2020 · US
Exterior aircraft light and aircraft comprising the same
US-10710742-B2 · Jul 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21S45/20?
- CPC F21S45/20 is the Cooperative Patent Classification code for “Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42).”
- How many patents are filed under CPC F21S45/20 (Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42))?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F21S45/20 growing?
- Publication counts under this code: 3 in 2024 vs 7 in 2025 (latest complete years).