Superlattice electro-optic device including reconfigurable optical elements
US-12474602-B2 · Nov 18, 2025 · US
Optical limiters
Optical limiters · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F2203/52 |
| Official title | Optical limiters |
| Display label | Optical limiters |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Display substrate, display panel and display device, of each of which a pixel electrode having a hollowed-out structure with a preset size
US-2024296806-A1 · Sep 5, 2024 · US
Superlattice electro-optic device including reconfigurable optical elements
US-2024255782-A1 · Aug 1, 2024 · US
Display substrate, display panel and display device, of each of which a pixel electrode having a hollowed-out structure with a preset size
US-12014696-B2 · Jun 18, 2024 · US
Q switch resonator, and pulse generator
US-12003072-B2 · Jun 4, 2024 · US
Optical structure and method of manufacturing it
US-2024118471-A1 · Apr 11, 2024 · US
Superlattice electro-optic device including reconfigurable optical elements
US-11953765-B2 · Apr 9, 2024 · US
Self-adaptive electromagnetic energy attenuator
US-11781906-B2 · Oct 10, 2023 · US
Superlattice electro-optic device including reconfigurable optical elements
US-2023244096-A1 · Aug 3, 2023 · US
Superlattice electro-optic device including reconfigurable optical elements
US-11650438-B2 · May 16, 2023 · US
Self-adaptive electromagnetic energy attenuator
US-2023139136-A1 · May 4, 2023 · US
Intrinsic and tunable self-modulating optical limiter via strong cavity coupling
US-11604316-B2 · Mar 14, 2023 · US
Display substrate, display panel and display device
US-2022383830-A1 · Dec 1, 2022 · US
Q switch resonator, and pulse generator
US-2022255283-A1 · Aug 11, 2022 · US
Optical limiters with thermochromic material and nanostructures for facilitating aperture protection
US-11372270-B2 · Jun 28, 2022 · US
High-efficiency optical limiter using metasurface and phase-change material
US-11209716-B2 · Dec 28, 2021 · US
Optical film stack, changeable light source device, and face sensing module
US-11126823-B2 · Sep 21, 2021 · US
Optical film stack, changeable light source device, and face sensing module
US-2021158019-A1 · May 27, 2021 · US
Intrinsic and Tunable Self-Modulating Optical Limiter via Strong Cavity Coupling
US-2021124122-A1 · Apr 29, 2021 · US
Anti-dazzle imaging camera and method
US-10965842-B2 · Mar 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F2203/52?
- CPC G02F2203/52 is the Cooperative Patent Classification code for “Optical limiters.”
- How many patents are filed under CPC G02F2203/52 (Optical limiters)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC G02F2203/52 growing?
- Publication counts under this code: 6 in 2024 vs 1 in 2025 (latest complete years).