Yellow and magenta donor formulations for increased red vividness
US-12528946-B2 · Jan 20, 2026 · US
Azo dyes
Azo dyes · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B41M5/388 |
| Official title | Azo dyes |
| Display label | Azo dyes |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Printed product and method of producing printed product
US-12459283-B2 · Nov 4, 2025 · US
Aqueous ink, ink cartridge and ink jet recording method
US-2025129258-A1 · Apr 24, 2025 · US
Aqueous ink, ink cartridge and ink jet recording method
US-12215240-B2 · Feb 4, 2025 · US
Yellow and magenta donor formulations for increased red vividness
US-2024343908-A1 · Oct 17, 2024 · US
Compound, ink, resist composition for color filter, color filter, sheet for thermal transfer recording, and toner
US-12098288-B2 · Sep 24, 2024 · US
Thermal transfer recording sheet
US-2024025197-A1 · Jan 25, 2024 · US
Heat sensitive transfer recording sheet
US-11801703-B2 · Oct 31, 2023 · US
Printed product and method of producing printed product
US-2023151231-A1 · May 18, 2023 · US
Thermal transfer recording sheet
US-11097566-B2 · Aug 24, 2021 · US
Aqueous ink, ink cartridge and ink jet recording method
US-2021139723-A1 · May 13, 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
Heat sensitive transfer recording sheet
US-2020407572-A1 · Dec 31, 2020 · US
Thermal transfer recording sheet
US-10647142-B2 · May 12, 2020 · US
Coloring compound and thermal transfer recording sheet
US-10501631-B2 · Dec 10, 2019 · US
Thermal transfer recording sheet
US-2019217648-A1 · Jul 18, 2019 · US
Sublimation thermal transfer sheet and combination of sublimation thermal transfer sheet and transfer receiving article
US-2019105934-A1 · Apr 11, 2019 · US
Thermal transfer recording sheet set and image forming method
US-10195886-B2 · Feb 5, 2019 · US
Compound, ink, resist composition for color filter, thermal transfer recording sheet, and toner
US-10179858-B2 · Jan 15, 2019 · US
Compound, ink, resist composition for color filter, thermal transfer recording sheet, and toner
US-2018273757-A1 · Sep 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B41M5/388?
- CPC B41M5/388 is the Cooperative Patent Classification code for “Azo dyes.”
- How many patents are filed under CPC B41M5/388 (Azo dyes)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC B41M5/388 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).