Organic electroluminescence device and monoamine compound for organic electroluminescence device
US-2019363263-A1 · Nov 28, 2019 · US
Spiro-condensed systems
Spiro-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 | C07D495/20 |
| Official title | Spiro-condensed systems |
| Display label | Spiro-condensed systems |
| Total patents | 130 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 12 |
| 2017 | 15 |
| 2018 | 9 |
| 2019 | 17 |
| 2020 | 12 |
| 2021 | 17 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 11 |
| 2025 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low molecular weight modulators of the cold menthol receptor trpm8 and use thereof
US-2019350239-A1 · Nov 21, 2019 · US
Delayed fluorescence compound and organic electroluminescent device using the same
US-10472564-B2 · Nov 12, 2019 · US
Dispiro-oxepine/thiapine derivatives for optoelectronic semiconductors
US-2019334092-A1 · Oct 31, 2019 · US
Heterocyclic compound and organic light-emitting device comprising same
US-2019326517-A1 · Oct 24, 2019 · US
Materials for organic light-emitting devices
US-2019326521-A1 · Oct 24, 2019 · US
Compounds with spirobifluorene-structures
US-2019194164-A1 · Jun 27, 2019 · US
Compound and organic electronic element comprising same
US-2019198769-A1 · Jun 27, 2019 · US
Polyheteroaromatic compound and organic electroluminescence device using the same
US-2019123284-A1 · Apr 25, 2019 · US
Thienopyrimidine inhibitors of atypical protein kinase c
US-2019106433-A1 · Apr 11, 2019 · US
Delayed fluorescence compound and organic electroluminescent device using the same
US-2019093009-A1 · Mar 28, 2019 · US
Photoelectric conversion element, two-dimensional sensor, image sensor, and image pickup device
US-2019092743-A1 · Mar 28, 2019 · US
Compounds for organic light emitting diode materials
US-2019088884-A1 · Mar 21, 2019 · US
Thienopyrimidine inhibitors of atypical protein kinase C
US-10183950-B2 · Jan 22, 2019 · US
Organic electroluminescent materials and device
US-2018337342-A1 · Nov 22, 2018 · US
(1r,4r) 7-oxo-2-azabicyclo[2.2.2]oct-5-ene and derivatives thereof
US-2018319800-A1 · Nov 8, 2018 · US
Sulfone-containing fused heterocyclic compound and application thereof
US-2018312522-A1 · Nov 1, 2018 · US
Multicyclic compounds and methods of use thereof
US-10085968-B2 · Oct 2, 2018 · US
Salt and photoresist composition containing the same
US-10047046-B2 · Aug 14, 2018 · US
Spiro compound and organic light-emitting element comprising same
US-2018175304-A1 · Jun 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D495/20?
- CPC C07D495/20 is the Cooperative Patent Classification code for “Spiro-condensed systems.”
- How many patents are filed under CPC C07D495/20 (Spiro-condensed systems)?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC C07D495/20 growing?
- Publication counts under this code: 11 in 2024 vs 9 in 2025 (latest complete years).