Sulfonyl-bridged perinones
US-2025304795-A1 · Oct 2, 2025 · US
Quinophthalones
Quinophthalones · 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 | C09B25/00 |
| Official title | Quinophthalones |
| Display label | Quinophthalones |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Intermediate film for laminated glass, and laminated glass
US-12202980-B2 · Jan 21, 2025 · US
Liquid and solid state laser from 7H-pyrano[2,3-B:4,5-B′]diquinoline derivatives using energy transfer mechanism
US-11952496-B1 · Apr 9, 2024 · US
Coloring composition, film, color filter, solid-state imaging element, and image display device
US-11746239-B2 · Sep 5, 2023 · US
Resin composition, film, optical filter, solid-state imaging element, and image display device
US-2023159752-A1 · May 25, 2023 · US
Intermediate film for laminated glass, and laminated glass
US-2022403175-A1 · Dec 22, 2022 · US
Coloring composition, film, optical filter, solid-state imaging element, and image display device
US-2022390837-A1 · Dec 8, 2022 · US
Coloring composition, film, optical filter, solid-state imaging element, and image display device
US-2022308446-A1 · Sep 29, 2022 · US
Quinophthalone compound
US-11186720-B2 · Nov 30, 2021 · US
Quinophthalone compound
US-2021261783-A1 · Aug 26, 2021 · US
Quinophthalone compound
US-2020239693-A1 · Jul 30, 2020 · US
Coloring composition, film, color filter, solid-state imaging element, and image display device
US-2020207990-A1 · Jul 2, 2020 · US
Colorant, colored resin composition comprising the same, and color filter
US-10647853-B2 · May 12, 2020 · US
Coloring composition, color filter, pattern forming method, solid-state imaging device, and image display device
US-10641935-B2 · May 5, 2020 · US
Thermal transfer sheet, coating liquid for colorant layer, method for manufacturing thermal transfer sheet, and image forming method
US-2020062016-A1 · Feb 27, 2020 · US
Thermal transfer sheet, coating liquid for colorant layer, method for manufacturing thermal transfer sheet, and image forming method
US-10525757-B2 · Jan 7, 2020 · US
Sublimation thermal transfer sheet, and combination of sublimation thermal transfer sheet and transfer receiving article
US-2019263166-A1 · Aug 29, 2019 · US
Coloring composition, cured film, color filter, method for manufacturing color filter, solid-state imaging device, image display device, organic electroluminescent element, colorant, and method for producing colorant
US-10317794-B2 · Jun 11, 2019 · US
Coloring composition, method for producing coloring composition, color filter, pattern forming method, method for manufacturing color filter, solid-state imaging device, and image display device
US-10241247-B2 · Mar 26, 2019 · US
Method for producing halogenated organic pigment, halogenated organic pigment obtained by the production method, and colored composition comprising the same
US-10155867-B2 · Dec 18, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B25/00?
- CPC C09B25/00 is the Cooperative Patent Classification code for “Quinophthalones.”
- How many patents are filed under CPC C09B25/00 (Quinophthalones)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC C09B25/00 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).