Hybrid vacuum electronics communication and sensor system
US-12525919-B2 · Jan 13, 2026 · US
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active element in amplifier being vacuum tube (H03B5/14 takes precedence)
active element in amplifier being vacuum tube (H03B5/14 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 | H03B5/10 |
| Official title | active element in amplifier being vacuum tube (H03B5/14 takes precedence) |
| Display label | active element in amplifier being vacuum tube (H03B5/14 takes precedence) |
| Total patents | 20 |
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 | 6 |
| 2016 | 6 |
| 2017 | 2 |
| 2018 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid vacuum electronics communication and sensor system
US-2025247049-A1 · Jul 31, 2025 · US
Voltage controlled oscillator and control method thereof
US-10020777-B2 · Jul 10, 2018 · US
Synchronous buck inverter
US-2018097477-A1 · Apr 5, 2018 · US
Wien bridge oscillator
US-9935580-B2 · Apr 3, 2018 · US
Digital phase-locked loop supply voltage control
US-9866225-B2 · Jan 9, 2018 · US
CR oscillation circuit
US-9716501-B2 · Jul 25, 2017 · US
Voltage controlled oscillator and control method thereof
US-2017117849-A1 · Apr 27, 2017 · US
Cr oscillation circuit
US-2016301398-A1 · Oct 13, 2016 · US
Phase lock loop, voltage controlled oscillator of the phase lock loop, and method of operating the voltage controlled oscillator
US-9450588-B2 · Sep 20, 2016 · US
Digital phase-locked loop supply voltage control
US-2016269036-A1 · Sep 15, 2016 · US
Digital phase-locked loop supply voltage control
US-9350365-B2 · May 24, 2016 · US
Digital phase-locked loop supply voltage control
US-2016087641-A1 · Mar 24, 2016 · US
Phase noise reduction in LC-VCO
US-9252717-B2 · Feb 2, 2016 · US
Automatic amplitude control circuit
US-9225341-B2 · Dec 29, 2015 · US
Phase noise reduction in lc-vco
US-2015357977-A1 · Dec 10, 2015 · US
Phase lock loop, voltage controlled oscillator of the phase lock loop, and method of operating the voltage controlled oscillator
US-2015130522-A1 · May 14, 2015 · US
Automatic amplitude control circuit
US-2015109064-A1 · Apr 23, 2015 · US
Phase noise reduction control loop for oscillators using nonlinear resonator operation
US-8994465-B1 · Mar 31, 2015 · US
PLL with oscillator PVT compensation
US-8963649-B2 · Feb 24, 2015 · US