Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network

CPC: Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

Full Title

Full titles differ between systems:

IPC:

Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network

CPC:

Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1980.

Child Classifications

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H03H 1/0007 CPC only CPC only
H03H 1/02 RC networks, e.g. filters since 1980 IPC+CPC Available in IPC and CPC
H03H 2001/0014 2nd only CPC only CPC only
H03H 2001/0021 2nd only +9 CPC CPC only CPC only
H03H 2001/0092 2nd only CPC only CPC only

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