Condensed-cyclic compound and organic light-emitting diode comprising the same
US-9853222-B2 · Dec 26, 2017 · US
Peri-condensed systems
Peri-condensed systems · 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 | C07D471/16 |
| Official title | Peri-condensed systems |
| Display label | Peri-condensed systems |
| Total patents | 409 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 28 |
| 2017 | 33 |
| 2018 | 27 |
| 2019 | 43 |
| 2020 | 39 |
| 2021 | 37 |
| 2022 | 51 |
| 2023 | 32 |
| 2024 | 31 |
| 2025 | 50 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tricyclic oxazolidinone antibiotic compounds
US-9822114-B2 · Nov 21, 2017 · US
Organic metal complexes
US-2017317298-A1 · Nov 2, 2017 · US
Organic electroluminescent materials and devices
US-2017162802-A1 · Jun 8, 2017 · US
Materials for organic light-emitting devices
US-2017012219-A1 · Jan 12, 2017 · US
Antibacterial oxadiazolone derivatives
US-9487516-B2 · Nov 8, 2016 · US
Gyrase inhibitors
US-9481675-B2 · Nov 1, 2016 · US
Substituted pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxalines for the treatment of nervous system disorders
US-9428506-B2 · Aug 30, 2016 · US
Bridged triarylamines and -phosphines as materials for electronic devices
US-9422287-B2 · Aug 23, 2016 · US
Tricyclic oxazolidinone antibiotic compounds
US-2016237088-A1 · Aug 18, 2016 · US
Substituted heterocycle fused gamma-carbolines solid
US-2016194325-A1 · Jul 7, 2016 · US
Organic electroluminescent element
US-2016197287-A1 · Jul 7, 2016 · US
Substituted heterocycle fused gamma-carbolines synthesis
US-2016194326-A1 · Jul 7, 2016 · US
Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device
US-2016181564-A1 · Jun 23, 2016 · US
Substituted pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxalines for the treatment of nervous system disorders
US-9371324-B2 · Jun 21, 2016 · US
Materials for organic electroluminescent devices
US-9356243-B2 · May 31, 2016 · US
Synthesis of polycyclic alkaloids
US-9353112-B2 · May 31, 2016 · US
Flindersia alkaloids, derivatives and analogs: compositions and methods for producing the same
US-9353109-B2 · May 31, 2016 · US
Photoelectric conversion material, film containing the material, photoelectric conversion device, method for preparing photoelectric conversion device, method for using photoelectric conversion device, photosensor and imaging device
US-9349965-B2 · May 24, 2016 · US
Tricyclic oxazolidinone antibiotic compounds
US-9346804-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D471/16?
- CPC C07D471/16 is the Cooperative Patent Classification code for “Peri-condensed systems.”
- How many patents are filed under CPC C07D471/16 (Peri-condensed systems)?
- Our database includes 409 publications tagged with this CPC code.
- Is patent activity under CPC C07D471/16 growing?
- Publication counts under this code: 31 in 2024 vs 50 in 2025 (latest complete years).