Monodisperse core/shell and other complex structured nanocrystals and methods of preparing the same
US-9850426-B2 · Dec 26, 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 | H01L33/28 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 228 |
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 | 27 |
| 2016 | 23 |
| 2017 | 32 |
| 2018 | 31 |
| 2019 | 31 |
| 2020 | 25 |
| 2021 | 18 |
| 2022 | 11 |
| 2023 | 11 |
| 2024 | 14 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Array substrate, liquid crystal display panel and display device
US-9791735-B2 · Oct 17, 2017 · US
Illumination method and light-emitting device
US-2017236983-A1 · Aug 17, 2017 · US
Light emitting diode and display device including the same
US-2017229606-A1 · Aug 10, 2017 · US
Quantum dots and devices including the same
US-2017179338-A1 · Jun 22, 2017 · US
Surface light-emission element using zinc oxide substrate
US-9640720-B2 · May 2, 2017 · US
Optical semiconductor device and method for making the device
US-9634185-B2 · Apr 25, 2017 · US
Semiconductor nanocrystals and compositions and devices including same
US-2017069787-A1 · Mar 9, 2017 · US
Optoelectronic device
US-2017040493-A1 · Feb 9, 2017 · US
High efficiency LEDs and LED lamps
US-9559150-B2 · Jan 31, 2017 · US
Optoelectronic semiconductor chip, optoelectronic semiconductor component, and a method for producing an optoelectronic semiconductor component
US-2016343917-A1 · Nov 24, 2016 · US
Light emitting device and light emitting device package
US-9496457-B2 · Nov 15, 2016 · US
Composition comprising an engineered defect concentration
US-2016319461-A1 · Nov 3, 2016 · US
Methods for making water soluble quantum dots
US-9472717-B2 · Oct 18, 2016 · US
Ii-vi based light emitting semiconductor device
US-2016293799-A1 · Oct 6, 2016 · US
Method of integrating inorganic light emitting diode with oxide thin film transistor for display applications
US-2016293586-A1 · Oct 6, 2016 · US
Optoelectronic device with improved reflectivity
US-2016284938-A1 · Sep 29, 2016 · US
Wavelength converted light emitting device
US-2016268487-A1 · Sep 15, 2016 · US
Semiconductor nanocrystals and compositions and devices including same
US-9444008-B2 · Sep 13, 2016 · US
Method and system for generating a photo-response from MoS2 schottky junctions
US-9431573-B2 · Aug 30, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L33/28?
- CPC H01L33/28 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L33/28 (Electricity)?
- Our database includes 228 publications tagged with this CPC code.
- Is patent activity under CPC H01L33/28 growing?
- Publication counts under this code: 14 in 2024 vs 5 in 2025 (latest complete years).