Light emitting apparatus and illuminating apparatus
US-9219203-B2 · Dec 22, 2015 · US
Electricity
Electricity · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01L33/508 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 736 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 70 |
| 2016 | 89 |
| 2017 | 82 |
| 2018 | 97 |
| 2019 | 98 |
| 2020 | 107 |
| 2021 | 70 |
| 2022 | 47 |
| 2023 | 36 |
| 2024 | 32 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light-emitting device and method of manufacturing the same
US-9215762-B2 · Dec 15, 2015 · US
Engineered-phosphor led packages and related methods
US-2015357533-A1 · Dec 10, 2015 · US
Light emitting device
US-2015357532-A1 · Dec 10, 2015 · US
LED chips having fluorescent substrates with microholes and methods for fabricating
US-9196799-B2 · Nov 24, 2015 · US
Light emitting device with encapsulant formed with barriers and light emitting device package having the same
US-9190577-B2 · Nov 17, 2015 · US
Method for manufacturing light emitting device and light emitting device
US-9190579-B2 · Nov 17, 2015 · US
Lighting device
US-2015325757-A1 · Nov 12, 2015 · US
Package method and package
US-2015318453-A1 · Nov 5, 2015 · US
Light-emitting device, lighting device, light-emitting device assembly, and method for producing light-emitting device
US-9172010-B2 · Oct 27, 2015 · US
LED device having improved luminous efficacy
US-9166120-B2 · Oct 20, 2015 · US
Conformally coated light emitting devices and methods for providing the same
US-9166126-B2 · Oct 20, 2015 · US
Wafer level phosphor coating method and devices fabricated utilizing method
US-9159888-B2 · Oct 13, 2015 · US
Quantum dot sheet, and light unit and liquid crystal display including the same
US-2015286096-A1 · Oct 8, 2015 · US
Engineered-phosphor LED packages and related methods
US-9142738-B2 · Sep 22, 2015 · US
Method for producing a luminescence conversion substance layer, a composition therefor and a component comprising such a luminescence conversion substance layer
US-9142731-B2 · Sep 22, 2015 · US
Light emitting device chip, light emitting device package
US-9136445-B2 · Sep 15, 2015 · US
Optoelectronic semiconductor chip
US-9136431-B2 · Sep 15, 2015 · US
Backlight unit
US-2015247965-A1 · Sep 3, 2015 · US
Light emitting device having wavelength converting layer
US-9112121-B2 · Aug 18, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/508?
- CPC H01L33/508 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/508 (Electricity)?
- Our database includes 736 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/508 growing?
- Publication counts under this code: 32 in 2024 vs 8 in 2025 (latest complete years).