Signal transmitter
US-11901923-B2 · Feb 13, 2024 · US
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with tubes only (H03F3/24 takes precedence)
with tubes only (H03F3/24 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F3/22 |
| Official title | with tubes only (H03F3/24 takes precedence) |
| Display label | with tubes only (H03F3/24 takes precedence) |
| Total patents | 22 |
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 | 2 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 1 |
| 2022 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Broadband high power amplifier
US-11456702-B2 · Sep 27, 2022 · US
Signal Transmitter
US-2022302937-A1 · Sep 22, 2022 · US
Broadband high power amplifier
US-2020036334-A1 · Jan 30, 2020 · US
Power tube connection structure of power amplifier and power amplifier
US-10426036-B2 · Sep 24, 2019 · US
Power tube connection structure of power amplifier and power amplifier
US-2019223293-A1 · Jul 18, 2019 · US
Audio output circuit and audio device
US-10224889-B2 · Mar 5, 2019 · US
Power tube connection structure of power amplifier and power amplifier
US-10165687-B2 · Dec 25, 2018 · US
Audio output circuit and audio device
US-2018294787-A1 · Oct 11, 2018 · US
Tube amplifier assembly having a power tube and a capacitor assembly
US-9912308-B2 · Mar 6, 2018 · US
Coupling assembly and radiofrequency amplification system having the same
US-9859851-B2 · Jan 2, 2018 · US
Power tube connection structure of power amplifier and power amplifier
US-2017347457-A1 · Nov 30, 2017 · US
Doherty power amplifier
US-9800209-B2 · Oct 24, 2017 · US
Coupling assembly and radiofrequency amplification system having the same
US-2017111016-A1 · Apr 20, 2017 · US
Tube amplifier assembly having a power tube and a capacitor assembly
US-2016359462-A1 · Dec 8, 2016 · US
Tunable tube amplifier system of a radio-frequency power generator
US-9515616-B2 · Dec 6, 2016 · US
Tube amplifier assembly having a power tube and a capacitor assembly
US-9455674-B2 · Sep 27, 2016 · US
Tube amplifier assembly having a power tube and a capacitor assembly
US-2016181996-A1 · Jun 23, 2016 · US
Tunable tube amplifier system of a radio-frequency power generator
US-2016181994-A1 · Jun 23, 2016 · US
Doherty power amplifier
US-2016164473-A1 · Jun 9, 2016 · US