IPC Main Group
H03D 7/00 Transference of modulation from one carrier to another, e.g. frequency-changing
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
Additional Content
Demodulation or transference of modulation of modulated electromagnetic waves Super-regenerative demodulator circuits Dielectric amplifiers, magnetic amplifiers, parametric amplifiers used as a frequency-changers
Related Keywords
TRANSFER(S) of modulation from one carrier wave to another
8 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H03D 7/02 by means of diodes
- H03D 7/06 by means of discharge tubes having more than two electrodes
- H03D 7/12 by means of semiconductor devices having more than two electrodes
- H03D 7/14 Balanced arrangements
- H03D 7/16 Multiple frequency-changing
- H03D 7/18 Modifications of frequency-changers for eliminating image frequencies
- H03D 7/2 by means of transit-time tubes
- H03D 7/22 by deflecting an electron beam in a discharge tube
Top Applicants
Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 5,625
- SAMSUNG ELECTRONICS COMPANY KR 5,496
- MURATA MANUFACTURING COMPANY JP 5,478
- HUAWEI TECHNOLOGIES COMPANY CN 3,383
- INTEL CORPORATION US 3,091
- TEXAS INSTRUMENTS US 3,070
- MURATA MANUFACTURING COMPANY 2,722
- SKYWORKS SOLUTIONS US 2,290
- SEIKO EPSON CORPORATION 2,177
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158