Spiro-condensed lactam compounds for organic electroluminescent devices
US-2016372681-A1 · Dec 22, 2016 · US
in which the condensed system contains four or more hetero rings
in which the condensed system contains four or more hetero 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 | C07D495/22 |
| Official title | in which the condensed system contains four or more hetero rings |
| Display label | in which the condensed system contains four or more hetero rings |
| Total patents | 398 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 40 |
| 2016 | 25 |
| 2017 | 35 |
| 2018 | 31 |
| 2019 | 34 |
| 2020 | 43 |
| 2021 | 32 |
| 2022 | 34 |
| 2023 | 40 |
| 2024 | 44 |
| 2025 | 30 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Organic compound and organic thin film and electronic device
US-2016372686-A1 · Dec 22, 2016 · US
Aromatic amine derivatives and preparation method, uses and organic electroluminescent devices thereof
US-9515268-B2 · Dec 6, 2016 · US
Organic Transistor, Compound, Organic Semiconductor Material for Non-Light-Emitting Organic Semiconductor Device, Material for Organic Transistor, Coating Solution for Non-Light-Emitting Organic Semiconductor Device, and Organic Semiconductor Film for Non-Light-Emitting Organic Semiconductor Device
US-2016322588-A1 · Nov 3, 2016 · US
Methods and compounds for synthesizing fused thiophenes
US-2016318949-A1 · Nov 3, 2016 · US
Organic photoelectric device image sensor and electronic device
US-2016301013-A1 · Oct 13, 2016 · US
Organic Electroluminescent Materials and Devices
US-2016285009-A1 · Sep 29, 2016 · US
Condensed cyclic compound and organic light-emitting diode including the same
US-9450190-B2 · Sep 20, 2016 · US
Fused polycyclic heteroaromatic compound, organic thin film including compound and electronic device including organic thin film
US-2016226005-A1 · Aug 4, 2016 · US
Polymer compound and electronic device using the same
US-9396831-B2 · Jul 19, 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
Detection and use of low molecular-weight modulators of the cold-menthol receptor TRPM8
US-9346823-B2 · May 24, 2016 · US
Organic electroluminescent device
US-9337430-B2 · May 10, 2016 · US
Asymmetric fused polyheteroaromatic compound, organic thin film including the asymmetric fused polyheteroaromatic compound, and electronic device including the organic thin film
US-9318713-B2 · Apr 19, 2016 · US
Chemicals and the synthesizing methods thereof
US-9303117-B2 · Apr 5, 2016 · US
Triazolothienopyrimidine compound inhibitors of urea transporters and methods of using inhibitors
US-9303042-B2 · Apr 5, 2016 · US
Aromatic amine derivatives and preparation method, uses and organic electroluminescent devices thereof
US-2016087221-A1 · Mar 24, 2016 · US
Monomer, polymer, resist composition, and patterning process
US-9256127-B2 · Feb 9, 2016 · US
Bromodomain inhibitors and uses thereof
US-9249161-B2 · Feb 2, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D495/22?
- CPC C07D495/22 is the Cooperative Patent Classification code for “in which the condensed system contains four or more hetero rings.”
- How many patents are filed under CPC C07D495/22 (in which the condensed system contains four or more hetero rings)?
- Our database includes 398 publications tagged with this CPC code.
- Is patent activity under CPC C07D495/22 growing?
- Publication counts under this code: 44 in 2024 vs 30 in 2025 (latest complete years).