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PCE
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DIFF Subgroup
H03C 3/14

simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Angle modulation > by means of variable impedance > by means of a variable reactive element > simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

CPC:

Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence) > by means of a variable reactive element > simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • H03C 3/145 CPC only CPC only
  • H03C 3/16 in which the active element simultaneously serves as the active element of an oscillator IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

  1. QUALCOMM US 5,625
  2. SAMSUNG ELECTRONICS COMPANY KR 5,496
  3. MURATA MANUFACTURING COMPANY JP 5,478
  4. HUAWEI TECHNOLOGIES COMPANY CN 3,383
  5. INTEL CORPORATION US 3,091
  6. TEXAS INSTRUMENTS US 3,070
  7. MURATA MANUFACTURING COMPANY 2,722
  8. SKYWORKS SOLUTIONS US 2,290
  9. SEIKO EPSON CORPORATION 2,177
  10. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158

Top Applicants (CPC)

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