Coloring composition, film, optical filter, solid-state imaging element and image display device
US-12535732-B2 · Jan 27, 2026 · US
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Azomethine dyes
Azomethine dyes · 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 | C09B55/00 |
| Official title | Azomethine dyes |
| Display label | Azomethine dyes |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coloring composition, film, optical filter, solid-state imaging element, image display device, and compound
US-12529969-B2 · Jan 20, 2026 · US
Compound, ink, resist composition for color filter, color filter, sheet for thermal transfer recording, and toner
US-12098288-B2 · Sep 24, 2024 · US
Resin composition, film, optical filter, solid-state imaging element, and image display device
US-2023159752-A1 · May 25, 2023 · US
Coloring composition, film, optical filter, solid-state imaging element and image display device
US-2023131561-A1 · Apr 27, 2023 · US
Coloring composition, film, optical filter, solid-state imaging element, image display device, and compound
US-2023126240-A1 · Apr 27, 2023 · US
Coloring composition, film, optical filter, solid-state imaging element, and image display device
US-2022390837-A1 · Dec 8, 2022 · US
Compound, liquid composition, thermal transfer recording sheet, toner, resist composition for color filter, and color filter
US-11021436-B2 · Jun 1, 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
Compound, liquid composition, thermal transfer recording sheet, toner, resist composition for color filter, and color filter
US-2020347007-A1 · Nov 5, 2020 · US
Oxidative dye couplers with novel auxochrome substituents and azomethine dyes and leuco forms thereof
US-2020024455-A1 · Jan 23, 2020 · US
Ultraviolet-curable resin composition and optical fiber
US-10358577-B2 · Jul 23, 2019 · US
Ultraviolet-curable resin composition and optical fiber
US-2019127605-A1 · May 2, 2019 · US
Photoelectric conversion element, dye-sensitized solar cell, metal complex dye, dye solution, dye-adsorbed electrode and method of producing dye-sensitized solar cell
US-9614165-B2 · Apr 4, 2017 · US
Photoelectric conversion element, dye-sensitized solar cell, metal complex dye, dye solution, dye-absorbed electrode and method of producing dye-sensitized solar cell
US-2015280145-A1 · Oct 1, 2015 · US
Colored composition and image display structure
US-9075281-B2 · Jul 7, 2015 · US