Assignee
ZHANG YONGCHUN
CN·3 granted patents·2 pending applications·4 citations·filing 2019–2022
Technology mixH04R5
Top patents by PatentIndex Score
5 records- 0171US11356779B2Multi-engine array system and loudspeakerZHANG YONGCHUN·Filed 2019·Granted Jun 7, 2022·3 cites·7 claims
- 0258US11356781B2Speaker unit and speaker deviceZHANG YONGCHUN·Filed 2019·Granted Jun 7, 2022·1 cites·14 claims
- 0344US11516593B2Multipole engine array system and loudspeakerZHANG YONGCHUN·Filed 2019·Granted Nov 29, 2022·0 cites·10 claims
- 0440US2026006383A1Planar transducer and speakerZHANG YONGCHUN·Filed 2022·Application pending·0 cites
- 0539US2025386135A1Vibration system and loudspeakerZHANG YONGCHUN·Filed 2022·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →