Quantum dot, quantum dot layer, light-emitting element, and solar cell
US-2024158691-A1 · May 16, 2024 · US
Chalcogenides
Chalcogenides · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09K11/661 |
| Official title | {Chalcogenides} |
| Display label | Chalcogenides |
| Total patents | 141 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 10 |
| 2019 | 13 |
| 2020 | 16 |
| 2021 | 9 |
| 2022 | 22 |
| 2023 | 13 |
| 2024 | 14 |
| 2025 | 19 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A photon multiplying material
US-2020362234-A1 · Nov 19, 2020 · US
Compositions and methods for the downconversion of light
US-10794771-B2 · Oct 6, 2020 · US
Photovoltaic devices with depleted heterojunctions and shell-passivated nanoparticles
US-10784388-B2 · Sep 22, 2020 · US
Methods of producing metal sulfides, metal selenides, and metal sulfides/selenides having controlled architectures using kinetic control
US-10767112-B2 · Sep 8, 2020 · US
System and method for making quantum dots
US-10767110-B2 · Sep 8, 2020 · US
Nanocrystal assemblies and uses thereof
US-2020270517-A1 · Aug 27, 2020 · US
Photoactive, inorganic ligand-capped inorganic nanocrystals
US-2020249570-A1 · Aug 6, 2020 · US
Photon multiplier film
US-2020194701-A1 · Jun 18, 2020 · US
Quantum-dot display substrate, method for preparing the same, and display panel
US-10608196-B2 · Mar 31, 2020 · US
Passive luminescent illuminator
US-10591656-B1 · Mar 17, 2020 · US
A process for the synthesis of air stable metal sulphide quantum dots
US-2020048543-A1 · Feb 13, 2020 · US
Ligand-exchangeable nanoparticles and methods of making the same
US-10544168-B2 · Jan 28, 2020 · US
Tin sulfide quantum dots for in vivo near infrared imaging
US-10517967-B2 · Dec 31, 2019 · US
System and method for making quantum dots
US-2019359885-A1 · Nov 28, 2019 · US
Light-emitting film, production method thereof, and a light emitting device including the same
US-2019326533-A1 · Oct 24, 2019 · US
Radiation-emitting optoelectronic device
US-10411170-B2 · Sep 10, 2019 · US
White-light fluorescent material, and manufacturing method and use thereof
US-10344209-B2 · Jul 9, 2019 · US
Quantum-dot display substrate, method for preparing the same, and display panel
US-2019207136-A1 · Jul 4, 2019 · US
X-ray detector
US-10312292-B2 · Jun 4, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K11/661?
- CPC C09K11/661 is the Cooperative Patent Classification code for “Chalcogenides.”
- How many patents are filed under CPC C09K11/661 (Chalcogenides)?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC C09K11/661 growing?
- Publication counts under this code: 14 in 2024 vs 19 in 2025 (latest complete years).