Surface light source device
US-2024030207-A1 · Jan 25, 2024 · 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 | H01L33/08 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 1,765 |
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 | 208 |
| 2016 | 219 |
| 2017 | 206 |
| 2018 | 197 |
| 2019 | 230 |
| 2020 | 178 |
| 2021 | 153 |
| 2022 | 133 |
| 2023 | 117 |
| 2024 | 102 |
| 2025 | 22 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light-emitting device and lighting system
US-9224926-B2 · Dec 29, 2015 · US
Method for manufacturing nanostructure semiconductor light emitting device
US-2015372186-A1 · Dec 24, 2015 · US
Semiconductor light emitting device and manufacturing method of the same
US-2015372195-A1 · Dec 24, 2015 · US
Display apparatus and manufacturing method thereof
US-9219192-B2 · Dec 22, 2015 · US
Single photon source die and method of manufacturing the same
US-9219190-B2 · Dec 22, 2015 · US
Tuneable quantum light source
US-9219191-B2 · Dec 22, 2015 · US
Method for manufacturing nano-structured semiconductor light-emitting element
US-2015364642-A1 · Dec 17, 2015 · US
Nanowire structure and method for manufacturing the same
US-2015357520-A1 · Dec 10, 2015 · US
LED light source and method of manufacturing the same
US-9207491-B2 · Dec 8, 2015 · US
Optoelectronic device comprising microwires or nanowires
US-2015340552-A1 · Nov 26, 2015 · US
Light-emissive devices and light-emissive displays
US-2015333237-A1 · Nov 19, 2015 · US
Array substrate and method for fabricating the same
US-9190564-B2 · Nov 17, 2015 · US
High-power white leds
US-2015325754-A1 · Nov 12, 2015 · US
Light emitting device package
US-2015311396-A1 · Oct 29, 2015 · US
Semiconductor light emitting device
US-9172008-B2 · Oct 27, 2015 · US
Light emitting device, backlight unit and display apparatus
US-2015301259-A1 · Oct 22, 2015 · US
Light-emitting device and method of producing the same
US-2015295145-A1 · Oct 15, 2015 · US
Semiconductor light-emitting device
US-9159882-B2 · Oct 13, 2015 · US
Thin film transistor array panel having improved aperture ratio and method of manufacturing same
US-9142680-B2 · Sep 22, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/08?
- CPC H01L33/08 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/08 (Electricity)?
- Our database includes 1,765 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/08 growing?
- Publication counts under this code: 102 in 2024 vs 22 in 2025 (latest complete years).