4-oxoquinoline compounds
US-10522767-B2 · Dec 31, 2019 · US
Naphthalimide dyes; Phthalimide dyes
Naphthalimide dyes; Phthalimide 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 | C09B57/08 |
| Official title | Naphthalimide dyes; Phthalimide dyes |
| Display label | Naphthalimide dyes; Phthalimide dyes |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 10 |
| 2019 | 9 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rapid fluorescence tagging of glycans and other biomolecules with enhanced MS signals
US-10416166-B2 · Sep 17, 2019 · US
Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems
US-10323112-B2 · Jun 18, 2019 · US
N-fluoroalkyl-substituted dibromonaphthalene diimides and their use as semiconductor
US-10186664-B2 · Jan 22, 2019 · US
Cyanated benzoxanthene and benzothioxanthene compounds
US-2019010165-A1 · Jan 10, 2019 · US
Electro-polarizable compound and capacitor
US-10153087-B2 · Dec 11, 2018 · US
Organic thin film transistor, method of manufacturing organic thin film transistor, organic thin film transistor material, organic thin film transistor composition, organic semiconductor film, and compound
US-10131656-B2 · Nov 20, 2018 · US
Cyanated benzoxanthene and benzothioxanthene compounds
US-10125143-B2 · Nov 13, 2018 · US
Fluorescent organic light emitting elements having high efficiency
US-10074805-B2 · Sep 11, 2018 · US
Water soluble fluorescent or colored dyes and methods for their use
US-2018163052-A1 · Jun 14, 2018 · US
Photoelectric conversion material, photoelectric conversion element, optical sensor, and imaging element
US-9997721-B2 · Jun 12, 2018 · US
Organic thin film transistor, method of manufacturing organic thin film transistor, organic thin film transistor material, organic thin film transistor composition, organic semiconductor film, and compound
US-2018155338-A1 · Jun 7, 2018 · US
Organic thin film transistor, method of manufacturing organic thin film transistor, organic thin film transistor material, organic thin film transistor composition, organic semiconductor film, and compound
US-2018159043-A1 · Jun 7, 2018 · US
Electro-polarizable compound and capacitor
US-9978517-B2 · May 22, 2018 · US
Cyanated benzoxanthene and benzothioxanthene compounds
US-2018065980-A1 · Mar 8, 2018 · US
Fluorescent metal ion indicators with large stokes shifts
US-9846168-B2 · Dec 19, 2017 · US
4-oxoquinoline compounds
US-2017331049-A1 · Nov 16, 2017 · US
4-hydroxyquinoline compounds
US-2017327465-A1 · Nov 16, 2017 · US
Electro-polarizable compound and capacitor
US-2017287637-A1 · Oct 5, 2017 · US
Electro-polarizable compound and capacitor
US-2017287638-A1 · Oct 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B57/08?
- CPC C09B57/08 is the Cooperative Patent Classification code for “Naphthalimide dyes; Phthalimide dyes.”
- How many patents are filed under CPC C09B57/08 (Naphthalimide dyes; Phthalimide dyes)?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC C09B57/08 growing?
- Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).