Semiconductor structure including optical device and method for manufacturing the same
US-2024230996-A1 · Jul 11, 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 | H01L31/028 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 1,219 |
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 | 100 |
| 2016 | 137 |
| 2017 | 153 |
| 2018 | 159 |
| 2019 | 144 |
| 2020 | 146 |
| 2021 | 110 |
| 2022 | 97 |
| 2023 | 82 |
| 2024 | 81 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Array substrate, manufacture method thereof, and display panel
US-2015380476-A1 · Dec 31, 2015 · US
Nanostructure and optical device including the nanostructure
US-2015372163-A1 · Dec 24, 2015 · US
Systems and methods for graphene photodetectors
US-2015372159-A1 · Dec 24, 2015 · US
Photodetector and up-conversion device with gain
US-9214502-B2 · Dec 15, 2015 · US
Photodetector
US-2015357485-A1 · Dec 10, 2015 · US
Dark current reduction for back side illuminated image sensor
US-2015349009-A1 · Dec 3, 2015 · US
Method for producing a thick crystalline layer
US-2015349191-A1 · Dec 3, 2015 · US
Sensing apparatus
US-9190446-B1 · Nov 17, 2015 · US
Compositions and methods for improved solar cells
US-2015325715-A1 · Nov 12, 2015 · US
An electro-conductive paste comprising an inorganic reaction system with a high glass transition temperature in the preparation of electrodes in mwt solar cells
US-2015318414-A1 · Nov 5, 2015 · US
Alternating bias hot carrier solar cells
US-9171970-B2 · Oct 27, 2015 · US
Method for coupling a graphene layer and a substrate and device comprising the graphene/substrate structure obtained
US-2015303264-A1 · Oct 22, 2015 · US
Avalanche photodetector element
US-9159860-B2 · Oct 13, 2015 · US
Solar battery module and solar power generation system
US-2015287844-A1 · Oct 8, 2015 · US
Electrode forming paste composition, and method of manufacturing electrode and solar cell each using the same
US-2015255643-A1 · Sep 10, 2015 · US
Optoelectronic device and method for manufacturing same
US-2015255677-A1 · Sep 10, 2015 · US
Solid state imaging device and method of fabricating the same
US-2015255501-A1 · Sep 10, 2015 · US
Apparatus for generating/detecting terahertz wave using graphene and manufacturing method of the same
US-9130082-B2 · Sep 8, 2015 · US
Transparent photodetector for mobile devices
US-9130085-B2 · Sep 8, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L31/028?
- CPC H01L31/028 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L31/028 (Electricity)?
- Our database includes 1,219 publications tagged with this CPC code.
- Is patent activity under CPC H01L31/028 growing?
- Publication counts under this code: 81 in 2024 vs 10 in 2025 (latest complete years).