Lighting system for protecting circadian neuroendocrine function
US-2025345626-A1 · Nov 13, 2025 · 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 | C09K11/592 |
| Official title | {Chalcogenides} |
| Display label | Chalcogenides |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 1 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 3 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
More efficient photoluminescent material
US-2025207018-A1 · Jun 26, 2025 · US
Lighting system for protecting circadian neuroendocrine function
US-12285626-B2 · Apr 29, 2025 · US
Fluorescent body, method for manufacturing same, and light-emitting device using same
US-12180402-B2 · Dec 31, 2024 · US
Phosphor powder and light emitting device
US-12006459-B2 · Jun 11, 2024 · US
Method for manufacturing phosphor powder, phosphor powder, and light emitting device
US-11952520-B2 · Apr 9, 2024 · US
Method for manufacturing phosphor powder, phosphor powder, and light emitting device
US-2023323199-A1 · Oct 12, 2023 · US
Phosphor powder and light emitting device
US-2023323201-A1 · Oct 12, 2023 · US
Lighting system for protecting circadian neuroendocrine function
US-2023233872-A1 · Jul 27, 2023 · US
Infrared fluorescent coatings
US-11702551-B2 · Jul 18, 2023 · US
Lighting system for protecting circadian neuroendocrine function
US-11577091-B2 · Feb 14, 2023 · US
Luminophore combination, conversion element, and optoelectronic device
US-11542431-B2 · Jan 3, 2023 · US
Infrared fluorescent coating compositions
US-11479677-B2 · Oct 25, 2022 · US
Infrared Fluorescent Coatings
US-2022298362-A1 · Sep 22, 2022 · US
Fluorescent body, method for manufacturing same, and light-emitting device using same
US-2022243126-A1 · Aug 4, 2022 · US
Devices including green-emitting phosphors
US-2022231201-A1 · Jul 21, 2022 · US
Infrared fluorescent coatings
US-11370925-B2 · Jun 28, 2022 · US
Phosphor
US-11292964-B2 · Apr 5, 2022 · US
Suspension of a magnesium silicate, method for making same and use thereof as a phosphor
US-11286422-B2 · Mar 29, 2022 · US
Dimmable light source
US-11230664-B2 · Jan 25, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K11/592?
- CPC C09K11/592 is the Cooperative Patent Classification code for “Chalcogenides.”
- How many patents are filed under CPC C09K11/592 (Chalcogenides)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C09K11/592 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).