Ester compound
US-2024025838-A1 · Jan 25, 2024 · US
containing "free" spiro atoms
containing "free" spiro atoms · 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 | C07C2603/94 |
| Official title | containing "free" spiro atoms |
| Display label | containing "free" spiro atoms |
| Total patents | 454 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 32 |
| 2016 | 25 |
| 2017 | 38 |
| 2018 | 44 |
| 2019 | 39 |
| 2020 | 38 |
| 2021 | 37 |
| 2022 | 44 |
| 2023 | 59 |
| 2024 | 45 |
| 2025 | 41 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Phenanthrene compounds for organic electronic devices
US-9799833-B2 · Oct 24, 2017 · US
Organic electroluminescent element, compound for organic electroluminescent element, and light-emitting device, display device, and illumination device using said element
US-9647214-B2 · May 9, 2017 · US
Dibenzosuberane-based electron-transport materials
US-2016380203-A1 · Dec 29, 2016 · US
Method for producing 5-norbornene-2-spiro-alpha-cycloalkanone- alpha'-spiro-2''-5''-norbornene
US-2016347699-A1 · Dec 1, 2016 · US
Chromene compound
US-9487693-B2 · Nov 8, 2016 · US
Anthracene compound, light-emitting element, light-emitting device, electronic appliance, and lighting device
US-9478749-B2 · Oct 25, 2016 · US
Norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic dianhydride, norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic acid and ester thereof, method for producing norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic dianhydride, polyimide obtained by using the same, and method for producing polyimide
US-9456495-B2 · Sep 27, 2016 · US
Benzocyclobutane(thio) carboxamides
US-2016264529-A1 · Sep 15, 2016 · US
Hole-transporting material for inorganic/organic hybrid perovskite solar cells
US-9437825-B2 · Sep 6, 2016 · US
Materials for Electronic Devices
US-2016254456-A1 · Sep 1, 2016 · US
Fluoro group-containing compound, fluoro group-containing polymer, organic light emitting device including the polymer, and method of manufacturing the device
US-9419224-B2 · Aug 16, 2016 · US
Method for producing ester compound and palladium catalyst used in the method
US-9403158-B2 · Aug 2, 2016 · US
Materials for organic electroluminescent devices
US-2016190447-A1 · Jun 30, 2016 · US
Anthracene derivative and organic electroluminescent element using same
US-2016181542-A1 · Jun 23, 2016 · US
Compound for organic light-emitting device and organic light-emitting device including the same
US-9371270-B2 · Jun 21, 2016 · US
Anthracene compound, light-emitting element, light-emitting device, electronic appliance, and lighting device
US-2016163991-A1 · Jun 9, 2016 · US
Compounds for electronic devices
US-9343683-B2 · May 17, 2016 · US
Novel phenylnaphthol derivatives
US-2016130203-A1 · May 12, 2016 · US
Method for producing ester compound
US-2016102044-A1 · Apr 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2603/94?
- CPC C07C2603/94 is the Cooperative Patent Classification code for “containing "free" spiro atoms.”
- How many patents are filed under CPC C07C2603/94 (containing "free" spiro atoms)?
- Our database includes 454 publications tagged with this CPC code.
- Is patent activity under CPC C07C2603/94 growing?
- Publication counts under this code: 45 in 2024 vs 41 in 2025 (latest complete years).