High frequency module and communication device
US-2026066853-A1 · Mar 5, 2026 · US
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F3/00 |
| Official title | Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements |
| Display label | Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements |
| Total patents | 48 |
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 | 10 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 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.
Sensor device and display device including the same
US-12373064-B2 · Jul 29, 2025 · US
Sensor device and display device including the same
US-2024310956-A1 · Sep 19, 2024 · US
Acousto-optic coupling techniques and related systems and methods
US-12030085-B2 · Jul 9, 2024 · US
Parameter estimation in driver circuitry
US-2023147461-A1 · May 11, 2023 · US
Parameter estimation in driver circuitry
US-11644494-B1 · May 9, 2023 · US
System and method of generating phonons
US-11555738-B2 · Jan 17, 2023 · US
Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption
US-11510076-B2 · Nov 22, 2022 · US
Parallel use of serial controls in improved wireless devices and power amplifier modules
US-11159189-B2 · Oct 26, 2021 · US
Parallel use of serial controls in improved wireless devices and power amplifier modules
US-2021184710-A1 · Jun 17, 2021 · US
DC current cancellation scheme for an optical receiver
US-10944486-B2 · Mar 9, 2021 · US
Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption
US-2021022017-A1 · Jan 21, 2021 · US
Parallel use of serial controls in improved wireless devices and power amplifier modules
US-10886955-B2 · Jan 5, 2021 · US
Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption
US-10798593-B2 · Oct 6, 2020 · US
System and method of generating phonons
US-2020309595-A1 · Oct 1, 2020 · US
Acousto-optic coupling techniques and related systems and methods
US-2020030849-A1 · Jan 30, 2020 · US
Parallel use of serial controls in improved wireless devices and power amplifier modules
US-2019222240-A1 · Jul 18, 2019 · US
Dc current cancellation scheme for an optical receiver
US-2019173588-A1 · Jun 6, 2019 · US
Individual DC and AC current shunting in optical receivers
US-10270538-B2 · Apr 23, 2019 · US
Parallel use of serial controls in improved wireless devices and power amplifier modules
US-10218393-B2 · Feb 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/00?
- CPC H03F3/00 is the Cooperative Patent Classification code for “Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements.”
- How many patents are filed under CPC H03F3/00 (Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/00 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).