CPC Subgroup
H03K 4/36 using a single tube exhibiting negative resistance between two of its electrodes, e.g. transitron, dynatron
Full Title
Generating pulses having essentially a finite slope or stepped portions > having triangular shape > having sawtooth shape > using as active elements vacuum tubes only > in which a sawtooth current is produced through an inductor > using a tube operating as a switching device > combined with means for generating the driving pulses > using a single tube exhibiting negative resistance between two of its electrodes, e.g. transitron, dynatron
1 direct subcode
Child Classifications
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- H03K 4/38 combined with Miller integrator
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