H03F3/54 - CPC Classification Index

ClassID:

219485 ⎘

H03F3/54 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements Amplifiers using transit-time effect in tubes or semiconductor devices

Sub-classes:

H03F3/55 » with semiconductor devices only 15
H03F3/56 » using klystrons 4
H03F3/58 » using travelling-wave tubes 42

Recent Application in this class:

20240128998

2024-04-18

POWER TRANSFER SYSTEM AND METHODS

20230010012

2023-01-12

Radio-frequency assembly with impedance matching filter

20220416727

2022-12-29

Amplifier circuit

20200406049

2020-12-31

Real-time methods for magnetic resonance spectra acquisition

20190074801

2019-03-07

Four wave mixing transmission line

20180340997

2018-11-29

Real-time methods for magnetic resonance spectra acquisition

20180340994

2018-11-29

Magnets for magnetic resonance applications

20180339165

2018-11-29

Real-time methods for magnetic resonance spectra acquisition, imaging and non-invasive ablation

20180131330

2018-05-10

Amplifier and optical transmitter using the same

#10

20170230010

2017-08-10

Amplification of electromagnetic waves via interaction with an electron beam by using a waveguide having a linear interaction channel with curved parts and including rows of pillars extending through the waveguide

#11