Red phosphor, preparation method thereof and light-emitting device prepared therefrom
US-11680203-B2 · Jun 20, 2023 · US
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Germanates
Germanates · 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 | C09K11/677 |
| Official title | {Germanates} |
| Display label | Germanates |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluoride fluorescent material, light emitting device, and method for producing fluoride fluorescent material
US-11174430-B2 · Nov 16, 2021 · US
Red phosphor, preparation method thereof and light-emitting device prepared therefrom
US-2021155848-A1 · May 27, 2021 · US
Fluoride fluorescent material, light emitting device, and method for producing fluoride fluorescent material
US-2020208050-A1 · Jul 2, 2020 · US
Phosphor, light emitting device, and method for producing phosphor
US-10611956-B2 · Apr 7, 2020 · US
Fluorophore, light-emitting device, and method for manufacturing fluorophore
US-2018072946-A1 · Mar 15, 2018 · US