Exterior structure, vehicle exterior structure, and method for controlling exterior structure
US-12565142-B2 · Mar 3, 2026 · US
Semi-transparent reflectors
Semi-transparent reflectors · 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 | F21S43/331 |
| Official title | {Semi-transparent reflectors} |
| Display label | Semi-transparent reflectors |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 7 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 17 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lighting device for the rear end of a motor vehicle
US-2026029102-A1 · Jan 29, 2026 · US
Lighting device for the back region of a motor vehicle
US-2026029103-A1 · Jan 29, 2026 · US
Light source unit for vehicular lighting tool and vehicular lighting tool
US-12455059-B2 · Oct 28, 2025 · US
Vehicle lamp having a lens with a functional layer and a color layer
US-12435856-B2 · Oct 7, 2025 · US
Vehicle lamp
US-2025164095-A1 · May 22, 2025 · US
Light source unit for vehicular lighting tool and vehicular lighting tool
US-2025109834-A1 · Apr 3, 2025 · US
Vehicle lamp
US-2025075873-A1 · Mar 6, 2025 · US
Exterior structure, vehicle exterior structure, and method for controlling exterior structure
US-2025026264-A1 · Jan 23, 2025 · US
Light member having a light manipulating element including two light manipulating surfaces
US-12049991-B1 · Jul 30, 2024 · US
Light source unit, and light emitting device for mobile body
US-12007090-B2 · Jun 11, 2024 · US
Lighting module and lighting device comprising same
US-11841525-B2 · Dec 12, 2023 · US
Lighting module and lighting device comprising same
US-11828969-B2 · Nov 28, 2023 · US
Light source unit, and light emitting device for mobile body
US-2023175664-A1 · Jun 8, 2023 · US
Lighting module and lighting device comprising same
US-2023075367-A1 · Mar 9, 2023 · US
Lighting module and lighting device comprising same
US-2023070602-A1 · Mar 9, 2023 · US
Lighting device for vehicles
US-11566770-B2 · Jan 31, 2023 · US
Lighting module and lighting device comprising same
US-11543579-B2 · Jan 3, 2023 · US
Lighting module and lighting device comprising same
US-11531153-B2 · Dec 20, 2022 · US
Visible light manipulating emblem for a vehicle
US-11485276-B2 · Nov 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21S43/331?
- CPC F21S43/331 is the Cooperative Patent Classification code for “Semi-transparent reflectors.”
- How many patents are filed under CPC F21S43/331 (Semi-transparent reflectors)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC F21S43/331 growing?
- Publication counts under this code: 2 in 2024 vs 6 in 2025 (latest complete years).