Power supply circuit and switching control circuit
US-2022368211-A1 · Nov 17, 2022 · US
using Zener diodes
using Zener diodes · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G05F3/18 |
| Official title | using Zener diodes |
| Display label | using Zener diodes |
| Total patents | 105 |
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 | 5 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 17 |
| 2021 | 17 |
| 2022 | 19 |
| 2023 | 9 |
| 2024 | 11 |
| 2025 | 4 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power supply unit for aerosol inhaler and control method and program of power supply unit for aerosol inhaler
US-2021391737-A1 · Dec 16, 2021 · US
High accuracy zener based voltage reference circuit
US-2021389791-A1 · Dec 16, 2021 · US
Reference voltage generation circuits and related methods
US-2021376718-A1 · Dec 2, 2021 · US
Green bridge circuit for adjusting direct current power source and alternating current power source
US-2021305911-A1 · Sep 30, 2021 · US
Power supply unit for aerosol inhaler and control method and program of power supply unit for aerosol inhaler
US-11133692-B2 · Sep 28, 2021 · US
Circuit device
US-2021281105-A1 · Sep 9, 2021 · US
TVS Diode Circuit with High Energy Dissipation and Linear Capacitance
US-2021249402-A1 · Aug 12, 2021 · US
Power supply unit for aerosol inhaler
US-2021242702-A1 · Aug 5, 2021 · US
Power supply unit for aerosol inhaler
US-2021234390-A1 · Jul 29, 2021 · US
Power supply unit for aerosol inhaler
US-11043829-B2 · Jun 22, 2021 · US
Power supply unit for aerosol inhaler
US-11031801-B2 · Jun 8, 2021 · US
Power supply unit for aerosol inhaler
US-2021143658-A1 · May 13, 2021 · US
Power supply unit for aerosol inhaler
US-11005282-B2 · May 11, 2021 · US
Voltage-regulating circuit and regulated power-supply module
US-2021099086-A1 · Apr 1, 2021 · US
Zener diode voltage reference circuit
US-10955868-B2 · Mar 23, 2021 · US
Bias circuit, image formation device and image forming apparatus
US-10948854-B2 · Mar 16, 2021 · US
Power supply unit for aerosol inhaler
US-10931130-B2 · Feb 23, 2021 · US
Switching circuit, power supply apparatus, and image forming apparatus
US-2020395858-A1 · Dec 17, 2020 · US
Switching device, driving circuit device for actuators, actuator system
US-2020395931-A1 · Dec 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G05F3/18?
- CPC G05F3/18 is the Cooperative Patent Classification code for “using Zener diodes.”
- How many patents are filed under CPC G05F3/18 (using Zener diodes)?
- Our database includes 105 publications tagged with this CPC code.
- Is patent activity under CPC G05F3/18 growing?
- Publication counts under this code: 11 in 2024 vs 4 in 2025 (latest complete years).