Oxide fluorescent material and light emitting device
US-12557447-B2 · Feb 17, 2026 · US
Aluminates; Silicates
Aluminates; Silicates · 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 | C09K11/685 |
| Official title | {Aluminates; Silicates} |
| Display label | Aluminates; Silicates |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oxide phosphor, light emitting device, and method for producing oxide phosphor
US-2025275312-A1 · Aug 28, 2025 · US
Led light source for medical optical coherence tomography with high axial resolution
US-2025063864-A1 · Feb 20, 2025 · US
Oxide fluorescent material and light emitting device using the same
US-2025002782-A1 · Jan 2, 2025 · US
Near infrared phosphor and light emitting device
US-2024405165-A1 · Dec 5, 2024 · US
Oxide fluorescent material and light emitting device using the same
US-2024400896-A1 · Dec 5, 2024 · US
Color stable mn - activated oxidofluorides as conversion luminescent materials for led-based solid state light sources
US-2024336838-A1 · Oct 10, 2024 · US
Light-emitting device, and electronic device and inspection method using same
US-12100927-B2 · Sep 24, 2024 · US
Oxide phosphor, light-emitting device, and method for producing oxide phosphor
US-2024263070-A1 · Aug 8, 2024 · US
Light-emitting device, illumination device, and night-vision device
US-2024218246-A1 · Jul 4, 2024 · US
Color stable Mn-activated oxidofluorides as conversion luminescent materials for LED-based solid state light sources
US-12018194-B2 · Jun 25, 2024 · US
Oxide phosphor, light-emitting device, and method for producing oxide phosphor
US-2024191133-A1 · Jun 13, 2024 · US
NOVEL Mn(VI) - ACTIVATED OXIDOFLUORIDES AS LUMINESCENT MATERIALS FOR SOLID STATE LIGHT SOURCES
US-2023279292-A1 · Sep 7, 2023 · US
Infrared fluorescent coatings
US-11702551-B2 · Jul 18, 2023 · US
Light emitting device and phosphor
US-11680206-B2 · Jun 20, 2023 · US
Oxide fluorescent material and light emitting device
US-2023167358-A1 · Jun 1, 2023 · US
Color stable mn - activated oxidofluorides as conversion luminescent materials for led-based solid state light sources
US-2023083851-A1 · Mar 16, 2023 · US
Infrared fluorescent coatings
US-11584860-B2 · Feb 21, 2023 · US
Light emitting device and phosphor
US-11560516-B2 · Jan 24, 2023 · US
Infrared fluorescent coating compositions
US-11479677-B2 · Oct 25, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K11/685?
- CPC C09K11/685 is the Cooperative Patent Classification code for “Aluminates; Silicates.”
- How many patents are filed under CPC C09K11/685 (Aluminates; Silicates)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C09K11/685 growing?
- Publication counts under this code: 8 in 2024 vs 3 in 2025 (latest complete years).