Semiconductor nanocrystals, method for coating semiconductor nanocrystals, and products including same
US-2017253799-A1 · Sep 7, 2017 · 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 | H01L33/26 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 499 |
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 | 25 |
| 2016 | 28 |
| 2017 | 41 |
| 2018 | 55 |
| 2019 | 74 |
| 2020 | 71 |
| 2021 | 60 |
| 2022 | 48 |
| 2023 | 43 |
| 2024 | 41 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light emitting device, light emitting device package comprising light emitting device, and light emitting apparatus comprising light emitting device package
US-2017229398-A1 · Aug 10, 2017 · US
Crystalline semiconductor film, plate-like body and semiconductor device
US-2017200790-A1 · Jul 13, 2017 · US
Light emitting diode (LED) using carbon materials
US-9647169-B2 · May 9, 2017 · US
Silicon nanocrystal light emitting diode and fabricating method thereof
US-9640736-B2 · May 2, 2017 · US
Surface light-emission element using zinc oxide substrate
US-9640720-B2 · May 2, 2017 · US
Semiconductor light-emitting device
US-9570655-B2 · Feb 14, 2017 · US
Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US-9502624-B2 · Nov 22, 2016 · US
Methods and apparatus for improving micro-LED devices
US-9502595-B2 · Nov 22, 2016 · US
Semiconductor substrate, semiconductor device and manufacturing method of semiconductor substrate
US-2016315220-A1 · Oct 27, 2016 · US
Methods for making water soluble quantum dots
US-9472717-B2 · Oct 18, 2016 · US
Coincident site lattice-matched growth of semiconductors on substrates using compliant buffer layers
US-9425249-B2 · Aug 23, 2016 · US
Composite resin and electronic device
US-9419192-B2 · Aug 16, 2016 · US
Transparent quantum dot light-emitting diodes with dielectric/metal/dielectric electrode
US-9419174-B2 · Aug 16, 2016 · US
Compositions, devices and methods for optimizing photosynthetically active radiation
US-9419177-B2 · Aug 16, 2016 · US
Lighting device with plural fluorescent materials
US-2016204311-A1 · Jul 14, 2016 · US
Crystalline multilayer structure and semiconductor device
US-9379190-B2 · Jun 28, 2016 · US
Semiconductor light emitting device
US-9368681-B2 · Jun 14, 2016 · US
Near-infrared light-emitting diode and method for manufacturing the same
US-9362453-B2 · Jun 7, 2016 · US
Light-emitting element having an optical function film including a reflection layer
US-2016148973-A1 · May 26, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/26?
- CPC H01L33/26 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/26 (Electricity)?
- Our database includes 499 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/26 growing?
- Publication counts under this code: 41 in 2024 vs 13 in 2025 (latest complete years).