Light emitting nanocrystals and methods of making light emitting nanocrystals
US-2026035615-A1 · Feb 5, 2026 · 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 | C09K11/641 |
| Official title | {Chalcogenides} |
| Display label | Chalcogenides |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 8 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 3 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light emitting nanocrystals and methods of making light emitting nanocrystals
US-12441939-B2 · Oct 14, 2025 · US
Swir pcLED and spinel type phosphors emitting in the 1000-1700 nm range
US-12398321-B2 · Aug 26, 2025 · US
More efficient photoluminescent material
US-2025207018-A1 · Jun 26, 2025 · US
Lighting apparatus
US-2025180183-A1 · Jun 5, 2025 · US
Quantum dot, method of preparing the same, light-emitting device including the quantum dot, electronic apparatus including the light-emitting device, and electronic equipment including the electronic apparatus
US-2025101300-A1 · Mar 27, 2025 · US
Lighting apparatus
US-12241611-B2 · Mar 4, 2025 · US
Led light source for medical optical coherence tomography with high axial resolution
US-2025063864-A1 · Feb 20, 2025 · US
Nanocrystal particles and production method thereof
US-2024174921-A1 · May 30, 2024 · US
Quantum dot, method for preparing quantum dot, and display device including quantum dot
US-2024166944-A1 · May 23, 2024 · US
Europium activating beta-type sialon phosphor, and light-emitting device
US-2024026221-A1 · Jan 25, 2024 · US
Semiconductor nanoparticle, and color conversion panel and electronic device including the same
US-2023295492-A1 · Sep 21, 2023 · US
Lighting apparatus
US-2023288042-A1 · Sep 14, 2023 · US
Lighting apparatus
US-11692683-B2 · Jul 4, 2023 · US
Organic light emitting diode display device
US-11665954-B2 · May 30, 2023 · US
Quantum dot-ligand composite, photosensitive resin composition, optical film, electroluminescent diode, and electronic device
US-2023165028-A1 · May 25, 2023 · US
Stable quantum dot compositions
US-11643594-B2 · May 9, 2023 · US
Luminophore mixture, conversion element and optoelectronic component
US-11616175-B2 · Mar 28, 2023 · US
SWIR pcLED and perovskite type and garnet type phosphors emitting in the 1000-1700 nm range
US-11535798-B2 · Dec 27, 2022 · US
Polymer, quantum dot composition and light-emitting device employing the same
US-2022384728-A1 · Dec 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K11/641?
- CPC C09K11/641 is the Cooperative Patent Classification code for “Chalcogenides.”
- How many patents are filed under CPC C09K11/641 (Chalcogenides)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC C09K11/641 growing?
- Publication counts under this code: 3 in 2024 vs 7 in 2025 (latest complete years).