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PCE
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DIFF Subgroup
H03D 7/12

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

Introduced: September 1968

Title

Titles differ between systems:

IPC: by means of semiconductor devices having more than two electrodes

CPC: by means of semiconductor devices having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

Full Title

Full titles differ between systems:

IPC:

Transference of modulation from one carrier to another, e.g. frequency-changing > by means of semiconductor devices having more than two electrodes

CPC:

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 semiconductor devices having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

Additional Content IPC

Balanced arrangements Multiple-frequency-changing Modifications of frequency-changers for eliminating image frequencies By means of transit-time tubes By deflecting an electron beam in a discharge tube

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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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