High-voltage device and method for increasing the dielectric strength in the high-voltage device
US-12531194-B2 · Jan 20, 2026 · US
Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6
Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6 · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/021 |
| Official title | {Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6} |
| Display label | Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6 |
| Total patents | 27 |
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 | 1 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 10 |
| 2019 | 4 |
| 2020 | 1 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Insulated earthing switch for an air insulated or mixed switchgear
US-12413053-B2 · Sep 9, 2025 · US
Sf6 free gas insulated disconnector with limited arcing volume
US-2024258049-A1 · Aug 1, 2024 · US
Circuit breaker with simplified non-linear double motion
US-12033817-B2 · Jul 9, 2024 · US
Insulated earthing switch for an air insulated or mixed switchgear
US-2023396043-A1 · Dec 7, 2023 · US
High-voltage device and method for increasing the dielectric strength in the high-voltage device
US-2023368989-A1 · Nov 16, 2023 · US
Circuit breaker with simplified non-linear double motion
US-2023005675-A1 · Jan 5, 2023 · US
Curing agent for thermosetting epoxy resins, and a process for the preparation of insulation systems for electrical engineering
US-10851201-B2 · Dec 1, 2020 · US
Process for treating silica-filled polyamide by impregnation in supercritical CO2
US-10487186-B2 · Nov 26, 2019 · US
Process for treating silica-filled polyamide by impregnation in supercritical co2
US-2019248973-A1 · Aug 15, 2019 · US
Switchgear with a gas-tight insulating space
US-10373785-B2 · Aug 6, 2019 · US
Liner arrangement and a circuit breaker with a liner arrangement and method for protecting an insulator body
US-10276334-B2 · Apr 30, 2019 · US
Air circuit breaker
US-10141140-B2 · Nov 27, 2018 · US
Switchgear With A Gas-Tight Insulating Space
US-2018240626-A1 · Aug 23, 2018 · US
Gas-insulated switch gear using dual motion with multi-lever
US-10043622-B1 · Aug 7, 2018 · US
Gas-insulated switch gear using dual motion with multi-lever
US-2018211802-A1 · Jul 26, 2018 · US
Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker
US-10002733-B2 · Jun 19, 2018 · US
Circuit breaker having closing resistor
US-9997321-B2 · Jun 12, 2018 · US
Air circuit breaker
US-2018158629-A1 · Jun 7, 2018 · US
A Curing Agent For Thermosetting Epoxy Resins, and a Process for the Preparation of Insulation Systems for Electrical Engineering
US-2018142058-A1 · May 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H33/021?
- CPC H01H33/021 is the Cooperative Patent Classification code for “Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6.”
- How many patents are filed under CPC H01H33/021 (Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC H01H33/021 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).