DIFF Main Group
H03H 7/00 Multiple-port networks comprising only passive electrical elements as network components
Introduced: September 1968
Additional Content IPC
Receiver input circuits Networks simulating a length of communication cable
Of 13 combined children, 10 exist in both systems.
3 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H03H 7/42 Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns +2 CPC IPC+CPC Available in IPC and CPC
- H03H 7/46 Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source +4 CPC IPC+CPC Available in IPC and CPC
- H03H 7/48 Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source (phase shifters providing two or more output signals H03H7/21) +3 CPC IPC+CPC Available in IPC and CPC
- H03H 7/54 Modifications of networks to reduce influence of variations of temperature since 1980 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