Electrostatic discharge protection circuit using GaN-based devices
US-12588293-B2 · Mar 24, 2026 · US
Free-wheeling circuits
Free-wheeling circuits · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H9/047 |
| Official title | {Free-wheeling circuits} |
| Display label | Free-wheeling circuits |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 14 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuit breaker with a passive clamping circuit including capacitors, operation method, dc network and aircraft
US-2025343404-A1 · Nov 6, 2025 · US
Universal serial bus voltage discharge
US-12455849-B2 · Oct 28, 2025 · US
Electrostatic discharge protection circuit using gan-based devices
US-2025323497-A1 · Oct 16, 2025 · US
Electrostatic discharge protection circuit using gan-based devices
US-2025324766-A1 · Oct 16, 2025 · US
Band-gap reference source circuit and electronic apparatus
US-12443212-B2 · Oct 14, 2025 · US
Electrostatic discharge protection circuit using gan-based devices
US-2025311441-A1 · Oct 2, 2025 · US
Power conversion apparatus
US-2025286365-A1 · Sep 11, 2025 · US
Surge suppression protection circuit
US-2025279647-A1 · Sep 4, 2025 · US
Contactor
US-2025226744-A1 · Jul 10, 2025 · US
Electrical assembly
US-2025210975-A1 · Jun 26, 2025 · US
Photovoltaic inverter system and lightning protection apparatus
US-2025167540-A1 · May 22, 2025 · US
Solid insulated switch
US-12278483-B2 · Apr 15, 2025 · US
X-ray fluorescence analyzer and power supply device
US-2025031293-A1 · Jan 23, 2025 · US
Semiconductor die with transformer and ESD clamp circuit
US-12206237-B2 · Jan 21, 2025 · US
Universal serial bus voltage discharge
US-2024427722-A1 · Dec 26, 2024 · US
Drain-ballasted electrostatic discharge protection circuits
US-2024372360-A1 · Nov 7, 2024 · US
Converter and on-board charger
US-12051966-B2 · Jul 30, 2024 · US
Semiconductor die with transformer and esd clamp circuit
US-2024120734-A1 · Apr 11, 2024 · US
Band-gap reference source circuit and electronic apparatus
US-2023418317-A1 · Dec 28, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H9/047?
- CPC H02H9/047 is the Cooperative Patent Classification code for “Free-wheeling circuits.”
- How many patents are filed under CPC H02H9/047 (Free-wheeling circuits)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC H02H9/047 growing?
- Publication counts under this code: 4 in 2024 vs 14 in 2025 (latest complete years).