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Aza-phenalenes, e.g. 1,8-naphthalimide
Aza-phenalenes, e.g. 1,8-naphthalimide · 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 | C07D221/14 |
| Official title | Aza-phenalenes, e.g. 1,8-naphthalimide |
| Display label | Aza-phenalenes, e.g. 1,8-naphthalimide |
| Total patents | 92 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 5 |
| 2020 | 13 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 11 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Photoacid generator and chemically amplified positive-type photoresist composition for thick film comprising the same
US-11150555-B2 · Oct 19, 2021 · US
Use of fluorescent polymers in marking compositions for the diagnostic determination of cleaning performance
US-2021275710-A1 · Sep 9, 2021 · US
Bromonaphthalimide compounds and phosphorescent liquid formulation thereof
US-11040946-B2 · Jun 22, 2021 · US
Anticancer drug conjugates
US-11007271-B2 · May 18, 2021 · US
Use of fluorescent polymers in marking compositions for the diagnostic determination of cleaning performance
US-10994041-B2 · May 4, 2021 · US
Multi function photoacid generator and chemically amplified photoresist composition for thick layer comprising the same
US-10990007-B2 · Apr 27, 2021 · US
Photoelectric conversion element
US-2021114988-A1 · Apr 22, 2021 · US
A process for the synthesis of carbon labeled organic compounds
US-2021107859-A1 · Apr 15, 2021 · US
Use of organic oxyimides as flame retardant for plastic materials and also flame-retardant plastic material composition and moulded parts produced therefrom
US-10913743-B2 · Feb 9, 2021 · US
N and p active materials for organic photoelectric conversion layers in organic photodiodes
US-2021005827-A1 · Jan 7, 2021 · US
Use of fluorescent polymers in marking compositions for the diagnostic determination of cleaning performance
US-2021000994-A1 · Jan 7, 2021 · US
Compound and dimer complex embodiments for supramolecular sensing
US-2020407318-A1 · Dec 31, 2020 · US
Cyclic amine surface modifier and organic electronic devices comprising such cyclic amine surface modifier
US-10879477-B2 · Dec 29, 2020 · US
1,8-naphthalimide derivative, preparation method therefor and use thereof
US-2020385356-A1 · Dec 10, 2020 · US
N and P active materials for organic photoelectric conversion layers in organic photodiodes
US-10790454-B2 · Sep 29, 2020 · US
Use of fluorescent polymers in marking compositions for the diagnostic determination of cleaning performance
US-10751438-B2 · Aug 25, 2020 · US
Compounds for carbonyl sulfide/carbon disulfide/hydrogen sulfide release and methods of making and using the same
US-10725055-B1 · Jul 28, 2020 · US
Chemically amplified photoresist composition, photoresist pattern, and method for preparing photoresist pattern
US-2020233302-A1 · Jul 23, 2020 · US
Thermal acid generator and resist composition using same
US-2020183271-A1 · Jun 11, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D221/14?
- CPC C07D221/14 is the Cooperative Patent Classification code for “Aza-phenalenes, e.g. 1,8-naphthalimide.”
- How many patents are filed under CPC C07D221/14 (Aza-phenalenes, e.g. 1,8-naphthalimide)?
- Our database includes 92 publications tagged with this CPC code.
- Is patent activity under CPC C07D221/14 growing?
- Publication counts under this code: 11 in 2024 vs 2 in 2025 (latest complete years).