IPC Main Group
H03C 3/00 Angle modulation
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- MODULATION
Additional Content
Glossary
FM Frequency Modulation PLL PLLs Phase Locked Loop VCO Voltage Controlled Oscillator
Limiting references
Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal Modulating electromagnetic waves
Related Keywords
ANGLE(S) modulation of electric oscillations
7 direct subcodes
Child Classifications
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- H03C 3/02 Details
- H03C 3/1 by means of variable impedance
- H03C 3/3 by means of transit-time tube
- H03C 3/34 by deflection of electron beam in discharge tube
- H03C 3/36 by means of light-sensitive element
- H03C 3/38 by converting amplitude modulation to angle modulation
- H03C 3/42 by means of electromechanical devices
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