High-power and high energy-density capacitor with scavenger
US-2026081073-A1 · Mar 19, 2026 · US
Liquid dielectrics
Liquid dielectrics · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01G4/04 |
| Official title | Liquid dielectrics |
| Display label | Liquid dielectrics |
| Total patents | 54 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 10 |
| 2019 | 6 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Three dimensional immunomechanical organoid model
US-2026079151-A1 · Mar 19, 2026 · US
Dielectric slurry composition and multilayer electronic component using same
US-12580127-B2 · Mar 17, 2026 · US
Synthetic ester and mineral oil dielectric fluids with increased stability
US-12467009-B2 · Nov 11, 2025 · US
Dielectric fluids comprising natural bio-sourced oil with increased stability
US-12467010-B2 · Nov 11, 2025 · US
Systems and methods for patterning valve metals
US-12198855-B1 · Jan 14, 2025 · US
Systems and methods for patterning valve metals
US-12142429-B1 · Nov 12, 2024 · US
Dielectric slurry composition and multilayer electronic component using same
US-2024177930-A1 · May 30, 2024 · US
Dielectric fluids comprising natural bio-sourced oil with increased stability
US-2024043767-A1 · Feb 8, 2024 · US
Synthetic ester and mineral oil dielectric fluids with increased stability
US-2024043766-A1 · Feb 8, 2024 · US
Dielectric fluids comprising natural bio-sourced oil with increased stability
US-11820951-B2 · Nov 21, 2023 · US
Synthetic ester and mineral oil dielectric fluids with increased stability
US-11814598-B2 · Nov 14, 2023 · US
Dielectric nanofluid for a capacitor system
US-2023065268-A1 · Mar 2, 2023 · US
Polypropylene film structure having increased life time
US-11591444-B2 · Feb 28, 2023 · US
Reconfigurable graphene devices via electrical double layer gating
US-11348998-B1 · May 31, 2022 · US
Insulation system and capacitor
US-11264169-B2 · Mar 1, 2022 · US
Polymer and molten ion conductive salt and silicon interface for decreased interfacial resistance
US-11205800-B2 · Dec 21, 2021 · US
Multilayer capacitor including liquid pocket
US-10930439-B2 · Feb 23, 2021 · US
Synthetic ester and mineral oil dielectric fluids with increased stability
US-2021027910-A1 · Jan 28, 2021 · US
Dielectric fluids comprising natural bio-sourced oil with increased stability
US-2021027911-A1 · Jan 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01G4/04?
- CPC H01G4/04 is the Cooperative Patent Classification code for “Liquid dielectrics.”
- How many patents are filed under CPC H01G4/04 (Liquid dielectrics)?
- Our database includes 54 publications tagged with this CPC code.
- Is patent activity under CPC H01G4/04 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).