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IPC Subgroup
H03G 1/04

Modifications of control circuit to reduce distortion caused by control

Introduced: September 1968

Last revised: January 2006

Full Title

Details of arrangements for controlling amplification > Modifications of control circuit to reduce distortion caused by control

Classification Context

Section:
ELECTRICITY
Class:
ELECTRONIC CIRCUITRY
Subclass:
CONTROL OF AMPLIFICATION

Filing statistics

IPC H03G 1/04 belongs to the parent subclass H03G, which recorded 13,146 patent applications worldwide between 2013 and 2023. Annual filings declined from 1,326 in 2013 to 888 in 2023 (-33%), peaking at 1,425 applications in 2014. The most active applicants in class H03 are QUALCOMM (5,625 applications), SAMSUNG ELECTRONICS COMPANY (5,496 applications) and MURATA MANUFACTURING COMPANY (5,478 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

reducing DISTORTION in electric amplifiers

Top Applicants

Top 10 applicants by patent filingsfor 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