CPC Subgroup
H03H 11/02 Multiple-port networks
Full Title
Networks using active elements > Multiple-port networks
11 direct subcodes
Child Classifications
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- H03H 11/04 Frequency selective two-port networks
- H03H 11/16 Networks for phase shifting
- H03H 11/24 Frequency-independent attenuators
- H03H 11/26 Time-delay networks
- H03H 11/28 Impedance matching networks
- H03H 11/32 Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H 11/34 Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source
- H03H 11/36 Networks for connecting several sources or loads, working on the same frequency band, to a common load or source (phase shifters providing two or more output signals H03H11/22)
- H03H 11/38 One-way transmission networks, i.e. unilines
- H03H 11/40 Impedance converters
Top Applicants
Top 10 applicants by patent filingsfor 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