Method for preparing a compound comprising at least one imine function by a specific condensation reaction, and particular application of said method in the field of dyeing
US-2022412011-A1 · Dec 29, 2022 · US
Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image)
Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image) · 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 | C09B55/009 |
| Official title | {Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image)} |
| Display label | Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image) |
| Total patents | 73 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Laundry care compositions
US-11530374-B2 · Dec 20, 2022 · US
Symmetric azomethine direct dyes, process for their preparation, cosmetic composition comprising at least one such dye and use thereof
US-11504318-B2 · Nov 22, 2022 · US
Use of fluorophore compounds of the aza- bodipy type as contrast agents in the short wave infrared region
US-2022322945-A1 · Oct 13, 2022 · US
Exocyclic amine substituted coumarin compounds and uses as fluorescent labels
US-11390753-B2 · Jul 19, 2022 · US
Symmetric azomethine direct dyes, process for their preparation, cosmetic composition comprising at least one such dye and use thereof
US-2022016009-A1 · Jan 20, 2022 · US
Derivatives of PPD useful for coloring hair and skin
US-11129782-B2 · Sep 28, 2021 · US
Nano dye molecule, color filter, and display panel
US-2021179854-A1 · Jun 17, 2021 · US
Compound, ink, resist composition for color filter, color filter, sheet for thermal transfer recording, and toner
US-2021115259-A1 · Apr 22, 2021 · US
Synthesis of a thiosulfonic acid by a step of periodate mediated oxidative coupling of a thiosulfonic acid with an aniline
US-10968174-B2 · Apr 6, 2021 · US
Fluorescent compound and fluorescent labeled biological substance using the same
US-2021088526-A1 · Mar 25, 2021 · US
Dissymmetric azomethine direct dyes and process for their preparation, cosmetic composition comprising at least one such dye and use thereof
US-10927259-B2 · Feb 23, 2021 · US
Azomethine direct dyes bearing at least one cationic charge, cosmetic composition comprising at least one such dye, implementation process therefor and use thereof
US-10889718-B2 · Jan 12, 2021 · US
Derivatives of ppd useful for coloring hair and skin
US-2020390670-A1 · Dec 17, 2020 · US
Compound, ink, resist composition for color filter, sheet for heat-sensitive transfer recording, and toner
US-2020339814-A1 · Oct 29, 2020 · US
Coloring compound and thermal transfer recording sheet
US-2020283633-A1 · Sep 10, 2020 · US
Exocyclic amine substituted coumarin compounds and uses as fluorescent labels
US-2020277529-A1 · Sep 3, 2020 · US
Dissymmetric azomethine direct dyes and process for their preparation, cosmetic composition comprising at least one such dye and use thereof
US-2020190329-A1 · Jun 18, 2020 · US
Compound, ink, resist composition for color filter, color filter, heat sensitive transfer recording sheet and toner
US-2020131371-A1 · Apr 30, 2020 · US
Novel azomethine direct dyes bearing at least one cationic charge, cosmetic composition comprising at least one such dye, implementation process therefor and use thereof
US-2020123386-A1 · Apr 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B55/009?
- CPC C09B55/009 is the Cooperative Patent Classification code for “Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image).”
- How many patents are filed under CPC C09B55/009 (Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image))?
- Our database includes 73 publications tagged with this CPC code.
- Is patent activity under CPC C09B55/009 growing?
- Publication counts under this code: 3 in 2023 vs 7 in 2024 (latest complete years).