Hemicyanine push-pull dyes based on chromene electron donors
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Dyes containing an onium group attached to the dye skeleton via a bridge
Dyes containing an onium group attached to the dye skeleton via a bridge · 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 | C09B69/001 |
| Official title | {Dyes containing an onium group attached to the dye skeleton via a bridge} |
| Display label | Dyes containing an onium group attached to the dye skeleton via a bridge |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
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US-2021189137-A1 · Jun 24, 2021 · US
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US-10358577-B2 · Jul 23, 2019 · US
Ultraviolet-curable resin composition and optical fiber
US-2019127605-A1 · May 2, 2019 · US
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Composition, method of manufacturing composition, curable composition, cured film, near-infrared cut filter, solid-state imaging device, infrared sensor, and camera module
US-2017174869-A1 · Jun 22, 2017 · US
Highly fluorogenic protein labelling agents
US-2017168064-A1 · Jun 15, 2017 · US
Antioxidant compound having anti atherosclerotic effect and preparation thereof
US-9580452-B2 · Feb 28, 2017 · US
Dye composition comprising a cationic para-aminophenol oxidation base
US-2016374913-A1 · Dec 29, 2016 · US
Antioxidant compound having anti atherosclerotic effect and preparation thereof
US-2016244470-A1 · Aug 25, 2016 · US
Dye composition comprising a cationic para-aminophenol oxidation base
US-9271910-B2 · Mar 1, 2016 · US
Cationic para-phenylenediamines, composition comprising at least such compounds, implementation process therefor and use thereof
US-2015150766-A1 · Jun 4, 2015 · US