by means of variable impedance (H03C3/30 - H03C3/38 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by means of variable impedance

CPC: by means of variable impedance (H03C3/30 - H03C3/38 take precedence)

Full Title

Full titles differ between systems:

IPC:

Angle modulation > by means of variable impedance

CPC:

Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence)

Additional Content IPC

Angle modulation by means of transit-time tube Angle modulation the tube being a magnetron Angle modulation by deflection of electron beam in discharge tube Angle modulation by means of light-sensitive element Conversion of amplitude to angle modulation

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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H03C 3/12 by means of a variable reactive element IPC+CPC Available in IPC and CPC
H03C 3/24 by means of a variable resistive element, e.g. tube +1 CPC IPC+CPC Available in IPC and CPC
H03C 3/28 using variable impedance driven mechanically or acoustically IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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