in amplifiers having discharge tubes

Full Title

Gain control in amplifiers or frequency changers > Automatic control ( combined with volume compression or expansion H03G7/00) > in amplifiers having discharge tubes

3 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

H03G 3/225
H03G 3/24 Control dependent upon ambient noise level or sound level
H03G 3/26 Muting amplifier when no signal is present

Top Applicants

Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG ELECTRONICS COMPANY KR 7,293
QUALCOMM US 7,085
MURATA MANUFACTURING COMPANY JP 5,982
HUAWEI TECHNOLOGIES COMPANY CN 4,641
INTEL CORPORATION US 3,863
TEXAS INSTRUMENTS US 3,409
MURATA MANUFACTURING COMPANY 2,874
SK HYNIX KR 2,644
SKYWORKS SOLUTIONS US 2,545
IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,437