Semiconductor optical modulator
US-2025180935-A1 · Jun 5, 2025 · US
Non-rectangular quantum well structures, e.g. graded or stepped quantum wells
Non-rectangular quantum well structures, e.g. graded or stepped quantum wells · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F1/01725 |
| Official title | {Non-rectangular quantum well structures, e.g. graded or stepped quantum wells} |
| Display label | Non-rectangular quantum well structures, e.g. graded or stepped quantum wells |
| Total patents | 36 |
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 | 6 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electro-absorption modulator
US-2023127711-A1 · Apr 27, 2023 · US
Electro-optical modulator and methods of formation thereof
US-11604371-B2 · Mar 14, 2023 · US
Quantum confined nanostructures with improved homogeneity and methods for making the same
US-2022357602-A1 · Nov 10, 2022 · US
Optical device including three-coupled quantum well structure having asymmetric multi-energy levels
US-11476385-B2 · Oct 18, 2022 · US
Electro-optical modulator and methods of formation thereof
US-2022252912-A1 · Aug 11, 2022 · US
Quantum confined nanostructures with improved homogeneity and methods for making the same
US-11402672-B2 · Aug 2, 2022 · US
Electro-optical modulator and methods of formation thereof
US-11327346-B2 · May 10, 2022 · US
Metallic quantum wells
US-11002996-B2 · May 11, 2021 · US
Quantum confined stark effect electroabsorption modulator on a SOI platform
US-10788688-B2 · Sep 29, 2020 · US
Optical device including three-coupled quantum well structure having asymmetric multi-energy levels
US-2020287081-A1 · Sep 10, 2020 · US
Optical device including three-coupled quantum well structure having asymmetric multi-energy levels
US-10727370-B2 · Jul 28, 2020 · US
Electro-Optical Modulator and Methods of Formation Thereof
US-2020073153-A1 · Mar 5, 2020 · US
Display device having quantum dot
US-10495805-B2 · Dec 3, 2019 · US
Quantum confined nanostructures with improved homogeneity and methods for making the same
US-2019339550-A1 · Nov 7, 2019 · US
Quantum confined stark effect electroabsorption modulator on a soi platform
US-2019324299-A1 · Oct 24, 2019 · US
Electronic device
US-10371969-B2 · Aug 6, 2019 · US
Quantum confined stark effect electroabsorption modulator on a soi platform
US-2019235286-A1 · Aug 1, 2019 · US
Metallic quantum wells
US-2019155067-A1 · May 23, 2019 · US
Electroabsorption modulator for depth imaging and other applications
US-10254407-B2 · Apr 9, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F1/01725?
- CPC G02F1/01725 is the Cooperative Patent Classification code for “Non-rectangular quantum well structures, e.g. graded or stepped quantum wells.”
- How many patents are filed under CPC G02F1/01725 (Non-rectangular quantum well structures, e.g. graded or stepped quantum wells)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC G02F1/01725 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2025 (latest complete years).