Integrated LED based illumination device
US-9528666-B2 · Dec 27, 2016 · 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 | H01L33/644 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 429 |
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 | 43 |
| 2016 | 52 |
| 2017 | 47 |
| 2018 | 48 |
| 2019 | 59 |
| 2020 | 46 |
| 2021 | 35 |
| 2022 | 32 |
| 2023 | 28 |
| 2024 | 36 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat dissipation material and light emitting diode package including a junction part made of the heat dissipation material
US-9516739-B2 · Dec 6, 2016 · US
Method for manufacturing liquid crystal display device
US-9502613-B2 · Nov 22, 2016 · US
Light emitting device and method for manufacturing the same
US-9455385-B2 · Sep 27, 2016 · US
Lighting apparatus
US-9412915-B2 · Aug 9, 2016 · US
Chip Substrate Provided with Joining Grooves in Lens Insert
US-2016197245-A1 · Jul 7, 2016 · US
Optoelectronic device, optical element and method for producing same
US-9362470-B2 · Jun 7, 2016 · US
Remote phosphor element filled with transparent material and method for forming multisection optical elements
US-9360188-B2 · Jun 7, 2016 · US
Light emitting device package
US-9362462-B2 · Jun 7, 2016 · US
Chip Substrate and Chip Package Module
US-2016126414-A1 · May 5, 2016 · US
Light-emitting device and method of manufacturing the same
US-9310062-B2 · Apr 12, 2016 · US
Light emitting device comprising wavelength converter
US-2016079490-A1 · Mar 17, 2016 · US
Semiconductor light device having a galvanic non-insulated driver
US-9287244-B2 · Mar 15, 2016 · US
Light-emitting device and method of manufacturing the same
US-9263658-B2 · Feb 16, 2016 · US
Composite substrate for light emitting diodes
US-9252337-B1 · Feb 2, 2016 · US
Light emitting device
US-9249963-B2 · Feb 2, 2016 · US
Light emitting package having a guiding member guiding an optical member
US-9240534-B2 · Jan 19, 2016 · US
LED lighting apparatus
US-9222625-B2 · Dec 29, 2015 · US
ESD protection component and component comprising an ESD protection component and an LED
US-9209619-B2 · Dec 8, 2015 · US
Optoelectronic device and method for manufacturing the same
US-2015333241-A1 · Nov 19, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/644?
- CPC H01L33/644 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/644 (Electricity)?
- Our database includes 429 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/644 growing?
- Publication counts under this code: 36 in 2024 vs 3 in 2025 (latest complete years).