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Hydrazone dyes (hydrazone-azo dyes C09B56/18)
Hydrazone dyes (hydrazone-azo dyes C09B56/18) · 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 | C09B26/02 |
| Official title | Hydrazone dyes (hydrazone-azo dyes C09B56/18) |
| Display label | Hydrazone dyes (hydrazone-azo dyes C09B56/18) |
| Total patents | 15 |
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 | 2 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
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US-2018156811-A1 · Jun 7, 2018 · US
Organic dyes comprising a hydrazone moiety and their use in dye-sensitized solar cells
US-9831042-B2 · Nov 28, 2017 · US
Fluorescent schiff base conjugate cu(ii) chemosensors and methods thereof
US-2017276607-A1 · Sep 28, 2017 · US
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Organic dyes comprising a hydrazone moiety and their use in dye-sensitized solar cells
US-2016126022-A1 · May 5, 2016 · US
Electronic devices comprising structured organic films
US-9097995-B2 · Aug 4, 2015 · US
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US-2015123087-A1 · May 7, 2015 · US