Assignee
CHANG JUI-CHENG
TW·3 granted patents·2 pending applications·2 citations·filing 2005–2020
Top patents by PatentIndex Score
5 records- 0149US8094867B2Speaker, yoke thereof and method for manufacturing yokeCHANG JUI-CHENG·Filed 2008·Granted Jan 10, 2012·2 cites·14 claims
- 0244US2009175488A1Diaphragm and Electrical-Acoustic Transducer having the sameCHANG JUI-CHENG·Filed 2008·Application pending·0 cites
- 0341US11698139B2Fluid transfer guiding/controlling device and application system thereofCHANG JUI CHENG·Filed 2019·Granted Jul 11, 2023·0 cites·13 claims
- 0440US12410793B2Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereofCHANG JUI CHENG·Filed 2020·Granted Sep 9, 2025·0 cites·14 claims
- 0539US2006239498A1Power-tolerant assembly for combining a sound ring and a diaphragm of speakerCHANG JUI-CHENG·Filed 2005·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →