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CPC Subgroup
H03D 7/06

by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

Full Title

Transference of modulation from one carrier to another, e.g. frequency-changing (H03D9/00, H03D11/00 take precedence; dielectric amplifiers, magnetic amplifiers, parametric amplifiers used as a frequency-changers H03F) > by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

2 direct subcodes

Child Classifications

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  • H03D 7/08 the signals to be mixed being applied between the same two electrodes
  • H03D 7/10 the signals to be mixed being applied between different pairs of electrodes

Top Applicants

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

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