CPC Subgroup
H03B 5/30 with frequency-determining element being electromechanical resonator
Full Title
Generation of oscillations using amplifier with regenerative feedback from output to input (H03B9/00, H03B15/00 take precedence) > with frequency-determining element being electromechanical resonator
3 direct subcodes
Child Classifications
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- H03B 5/32 being a piezoelectric resonator (selection of piezoelectric material H10N30/00)
- H03B 5/40 being a magnetostrictive resonator (H03B5/42 takes precedence; selection of magneto-strictive material ; H10N30/00)
- H03B 5/42 frequency-determining element connected via bridge circuit to closed ring around which signal is transmitted
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