Organic electroluminescent device
US-11594687-B2 · Feb 28, 2023 · US
This page is not indexed by search engines while we improve data quality.
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 | H01L2251/554 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrochromic polyamic acid material, preparation method thereof, and display device
US-11537020-B2 · Dec 27, 2022 · US
Organic electroluminescent device comprising a redox-doped electron transport layer and an auxiliary electron transport layer
US-11532801-B2 · Dec 20, 2022 · US
Organic light emitting device comprising polar matrix, metal dopant and silver cathode
US-11355721-B2 · Jun 7, 2022 · US
Electrochromic polyamic acid material, preparation method thereof, and display device
US-2021333677-A1 · Oct 28, 2021 · US
Organic light emitting element
US-11139435-B2 · Oct 5, 2021 · US
Thin film transistor and method of manufacturing the same
US-10651255-B2 · May 12, 2020 · US
Display device and manufacturing method thereof
US-10490763-B2 · Nov 26, 2019 · US
Display device and manufacturing method thereof
US-2019131559-A1 · May 2, 2019 · US
Substituted 1,2,3-triylidenetris(cyanomethanylylidene) cyclopropanes for VTE, electronic devices and semiconducting materials using them
US-10128442-B2 · Nov 13, 2018 · US
Organic light emitting element
US-2018301633-A1 · Oct 18, 2018 · US
Organic light emitting element
US-10032987-B2 · Jul 24, 2018 · US
Organic Light Emitting Device Comprising Polar Matrix, Metal Dopant and Silver Cathode
US-2018190922-A1 · Jul 5, 2018 · US
Organic Semiconducting Material Comprising an Electrical n-Dopant and an Electron Transport Matrix and Electronic Device Comprising the Semiconducting Material
US-2018114921-A1 · Apr 26, 2018 · US
Organic Electroluminescent Device Comprising a Redox-Doped Electron Transport Layer and an Auxiliary Electron Transport Layer
US-2018114940-A1 · Apr 26, 2018 · US
Substituted 1,2,3-Triylidenetris(cyanomethanylylidene) Cyclopropanes for VTE, Electronic Devices and Semiconducting Materials Using Them
US-2017373251-A1 · Dec 28, 2017 · US
Organic electroluminescence element and compound used therein
US-9660198-B2 · May 23, 2017 · US
Organic light-emitting device
US-9543538-B2 · Jan 10, 2017 · US