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)

Filing statistics

CPC H03D 7/00 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

9 direct subcodes

Child Classifications

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H03D 7/005
H03D 7/02 by means of diodes (H03D7/14 - H03D7/22 take precedence)
H03D 7/06 by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)
H03D 7/12 by means of semiconductor devices having more than two electrodes (H03D7/14 - H03D7/22 take precedence)
H03D 7/14 Balanced arrangements
H03D 7/16 Multiple-frequency-changing
H03D 7/18 Modifications of frequency-changers for eliminating image frequencies
H03D 7/20 by means of transit-time tubes
H03D 7/22 by deflecting an electron beam in a discharge tube (H03D7/20 takes precedence)

Top Applicants

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

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