CPC Subgroup
H03K 4/08 having sawtooth shape
Full Title
Generating pulses having essentially a finite slope or stepped portions > having triangular shape > having sawtooth shape
Filing statistics
CPC H03K 4/08 belongs to the parent subclass H03K, which recorded 115,470 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,771 in 2013 to 10,326 in 2023 (+33%), peaking at 12,309 applications in 2019. The most active applicants in class H03 are SAMSUNG ELECTRONICS COMPANY (7,293 applications), QUALCOMM (7,085 applications) and MURATA MANUFACTURING COMPANY (5,982 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
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- H03K 4/10 using as active elements vacuum tubes only
- H03K 4/48 using as active elements semiconductor devices (H03K4/787 - H03K4/84 take precedence)
- H03K 4/787 using as active elements semiconductor devices with two electrodes and exhibiting a negative resistance characteristic
- H03K 4/80 using as active elements multi-layer diodes
- H03K 4/83 using as active elements semiconductor devices with more than two PN junctions or with more than three electrodes or more than one electrode connected to the same conductivity region
- H03K 4/86 using as active elements gas-filled tubes
- H03K 4/88 using as active elements electrochemical cells
- H03K 4/90 Linearisation of ramp (modifying slopes of pulses H03K6/04; scanning distortion correction for television receivers H04N3/23); Synchronisation of pulses
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