Organic electroluminescence device
US-9512137-B2 · Dec 6, 2016 · US
containing five condensed rings
containing five condensed 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 | C07C2603/52 |
| Official title | containing five condensed rings |
| Display label | containing five condensed rings |
| Total patents | 230 |
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 | 39 |
| 2016 | 21 |
| 2017 | 20 |
| 2018 | 23 |
| 2019 | 20 |
| 2020 | 20 |
| 2021 | 22 |
| 2022 | 20 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 6 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compound and organic light-emitting device including the same
US-2016301004-A1 · Oct 13, 2016 · US
Materials for electronic devices
US-2016268509-A1 · Sep 15, 2016 · US
Compound and organic light-emitting device including the same
US-2016204346-A1 · Jul 14, 2016 · US
Fluoranthene polymer compound
US-9388101-B2 · Jul 12, 2016 · US
Conveniently prepared naphthalene and perylene derivatives as building blocks for organic electronic materials and dyestuff
US-9382264-B2 · Jul 5, 2016 · US
Organic electroluminescent element and electronic device
US-2016181543-A1 · Jun 23, 2016 · US
Anthracene derivative and organic electroluminescent element using same
US-2016181542-A1 · Jun 23, 2016 · US
Method of forming rigid imide material from soluble amide ester functionalized precursors
US-9355787-B2 · May 31, 2016 · US
Monomer, polymer, organic layer composition, organic layer, and method of forming patterns
US-2016145379-A1 · May 26, 2016 · US
Propenoate derivatives of betulin
US-9340513-B2 · May 17, 2016 · US
Semi-cured product, cured product and method for producing these, optical component, curable resin composition, and compound
US-9334352-B2 · May 10, 2016 · US
Derivatives of betulin
US-2016120878-A1 · May 5, 2016 · US
Organic compound, light-emitting device, and image display apparatus
US-9315460-B2 · Apr 19, 2016 · US
Condensed-cyclic compound and organic light-emitting diode including the same
US-2016099411-A1 · Apr 7, 2016 · US
Anthracene-containing derivative, production process thereof and organic electroluminescent display device
US-2016064668-A1 · Mar 3, 2016 · US
Condensed cyclic compound and organic light-emitting device including the same
US-2016049590-A1 · Feb 18, 2016 · US
Modified polyaromatic hydrocarbons and polyheterocyclics for optoelectronics
US-9249071-B2 · Feb 2, 2016 · US
Resins for underlayers
US-2016016872-A1 · Jan 21, 2016 · US
Indeno[1,2-b]phenanthrene compound and organic light emitting element including the same
US-9240553-B2 · Jan 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2603/52?
- CPC C07C2603/52 is the Cooperative Patent Classification code for “containing five condensed rings.”
- How many patents are filed under CPC C07C2603/52 (containing five condensed rings)?
- Our database includes 230 publications tagged with this CPC code.
- Is patent activity under CPC C07C2603/52 growing?
- Publication counts under this code: 18 in 2024 vs 6 in 2025 (latest complete years).