Method for producing fluorenone
US-12545633-B2 · Feb 10, 2026 · US
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having three rings
having three rings · 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 | C07C49/675 |
| Official title | having three rings |
| Display label | having three rings |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Organic compound and application thereof
US-12448354-B2 · Oct 21, 2025 · US
Method for producing fluorenone
US-2025129005-A1 · Apr 24, 2025 · US
Charge transfer complex
US-2024109869-A1 · Apr 4, 2024 · US
Method for producing fluorenone
US-2023406800-A1 · Dec 21, 2023 · US
Method for producing fluorenone
US-2023391705-A1 · Dec 7, 2023 · US
Organic compound and application thereof
US-2022359834-A1 · Nov 10, 2022 · US
Low molecular weight modulators of the cold menthol receptor TRPM8 and use thereof
US-11044931-B2 · Jun 29, 2021 · US
Low molecular weight modulators of the cold menthol receptor trpm8 and use thereof
US-2019350239-A1 · Nov 21, 2019 · US
Green oxidation catalytic system
US-10428043-B2 · Oct 1, 2019 · US
Low molecular weight modulators of the cold menthol receptor TRPM8 and use thereof
US-10398159-B2 · Sep 3, 2019 · US
Azasteroidal mimics
US-10214496-B2 · Feb 26, 2019 · US
Azasteroidal Mimics
US-2018155299-A1 · Jun 7, 2018 · US
Low molecular weight modulators of the cold menthol receptor trpm8 and use thereof
US-2017265510-A1 · Sep 21, 2017 · US
Metal oxide supported palladium catalyst for hydrocarbon oxidation
US-9656257-B2 · May 23, 2017 · US
Compositions and methods for enhancing virus efficacy
US-9283254-B2 · Mar 15, 2016 · US
Compositions and methods for enhancing virus efficacy
US-2015202240-A1 · Jul 23, 2015 · US
Compositions and methods for enhancing virus efficacy
US-8940291-B2 · Jan 27, 2015 · US