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CPC Subgroup
H03D 3/06

by combining signals additively or in product demodulators

Full Title

Demodulation of angle-, modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) > by detecting phase difference between two signals obtained from input signal (H03D3/28 - H03D3/32 take precedence; ; limiting arrangements H03G11/00) > by combining signals additively or in product demodulators

Filing statistics

CPC H03D 3/06 belongs to the parent subclass H03D, which recorded 4,553 patent applications worldwide between 2013 and 2023. Annual filings declined from 430 in 2013 to 348 in 2023 (-19%), peaking at 484 applications in 2017. The most active applicants in class H03 are SAMSUNG ELECTRONICS COMPANY (7,293 applications), QUALCOMM (7,085 applications) and MURATA MANUFACTURING COMPANY (5,982 applications).

Source: EPO PATSTAT, worldwide filings

4 direct subcodes

Child Classifications

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  • H03D 3/12 by means of discharge tubes having more than two electrodes
  • H03D 3/14 by means of semiconductor devices having more than two electrodes
  • H03D 3/16 by means of electromechanical resonators

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