Light-emitting device and method of manufacturing the same
US-12459949-B2 · Nov 4, 2025 · US
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Diazo compounds, i.e. compounds having the free valencies of >N2 groups attached to the same carbon atom
Diazo compounds, i.e. compounds having the free valencies of >N2 groups attached to the same carbon atom · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C245/12 |
| Official title | Diazo compounds, i.e. compounds having the free valencies of >N2 groups attached to the same carbon atom |
| Display label | Diazo compounds, i.e. compounds having the free valencies of >N2 groups attached to the same carbon atom |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2018 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Synthetic route to 2,2′-dimethyl-4,4′-diiodoazobenzene via homo-oxidative cross-coupling of aryl diazonium salt using cu-catalyzed sandmeyer-style reaction
US-11970433-B1 · Apr 30, 2024 · US
Photoswitchable isomerization of sterically hindered 2,2′,6,6′-tetraisopropyl-4,4′-diethynylazobenzene
US-11952326-B1 · Apr 9, 2024 · US
Reagents and methods for esterification
US-11884619-B2 · Jan 30, 2024 · US
Head-up display apparatus
US-11650419-B2 · May 16, 2023 · US
Light-emitting device and method of manufacturing the same
US-2022367830-A1 · Nov 17, 2022 · US
Reagents and Methods for Esterification
US-2022055979-A1 · Feb 24, 2022 · US
Reagents and methods for esterification
US-11091423-B2 · Aug 17, 2021 · US
Head-up display apparatus
US-2020341271-A1 · Oct 29, 2020 · US
Reagents and Methods for Esterification
US-2020190011-A1 · Jun 18, 2020 · US
Reagents and methods for esterification
US-10577303-B1 · Mar 3, 2020 · US
Yellow toner
US-10088768-B2 · Oct 2, 2018 · US
Yellow toner
US-2018066138-A1 · Mar 8, 2018 · US
Preparation of norbornane-based PAC ballasts
US-9261781-B2 · Feb 16, 2016 · US
Compound, resist composition and method of forming resist pattern
US-9097969-B2 · Aug 4, 2015 · US