Optoelectronic semiconductor chip
US-2024204138-A1 · Jun 20, 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 | H01L33/30 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 1,252 |
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 | 73 |
| 2016 | 87 |
| 2017 | 131 |
| 2018 | 158 |
| 2019 | 191 |
| 2020 | 159 |
| 2021 | 117 |
| 2022 | 98 |
| 2023 | 96 |
| 2024 | 112 |
| 2025 | 30 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Chelating agents for quantum dot precursor materials in color conversion layers for micro-leds
US-2024194836-A1 · Jun 13, 2024 · US
Red flip chip light emitting diode, package, and method of making the same
US-2015380389-A1 · Dec 31, 2015 · US
Light emitting device
US-9224922-B2 · Dec 29, 2015 · US
Lattice-mismatched semiconductor structures with reduced dislocation defect densities and related methods for device fabrication
US-9219112-B2 · Dec 22, 2015 · US
Semiconductor light emitting device including GaAs substrate
US-9214603-B2 · Dec 15, 2015 · US
Semiconductor light emitting element and optical coherence tomography apparatus
US-2015349198-A1 · Dec 3, 2015 · US
Epitaxial devices
US-2015349204-A1 · Dec 3, 2015 · US
Photoconductive antenna, terahertz wave generating device, camera, imaging device, and measuring device
US-2015340560-A1 · Nov 26, 2015 · US
Reflective contact layer system for an optoelectronic component and method for producing same
US-9196789-B2 · Nov 24, 2015 · US
Semiconductor light emitting device
US-9196808-B2 · Nov 24, 2015 · US
Formation of group III-V material layers on patterned substrates
US-9196795-B2 · Nov 24, 2015 · US
Light emitting device
US-9190562-B2 · Nov 17, 2015 · US
Semiconductor light emitting element
US-9190574-B2 · Nov 17, 2015 · US
Light emitting diode and light emitting diode lamp
US-9184345-B2 · Nov 10, 2015 · US
Strain-balanced extended-wavelength barrier detector
US-9178089-B1 · Nov 3, 2015 · US
Thermo-electrically pumped light-emitting diodes
US-2015311401-A1 · Oct 29, 2015 · US
Electronic device having quantum dots and method of manufacturing the same
US-2015295128-A1 · Oct 15, 2015 · US
Semiconductor film, method of producing semiconductor film, solar cell, light-emitting diode, thin film transistor, and electronic device
US-2015287878-A1 · Oct 8, 2015 · US
Nanowire-based optoelectronic device for light-emission
US-2015280060-A1 · Oct 1, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/30?
- CPC H01L33/30 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/30 (Electricity)?
- Our database includes 1,252 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/30 growing?
- Publication counts under this code: 112 in 2024 vs 30 in 2025 (latest complete years).