Inventor · disambiguated record
Cheng-Chang Tsai
Also filed as: TSAI CHENG-CHANG
8 granted patents·4 pending applications·107 citations·filing 1999–2020
86Inventor score
Top patents by PatentIndex Score
12 records- 0184US7255027B1Self-adjusting plier deviceTSAI CHENG CHANG·Filed 2006·Granted Aug 14, 2007·21 cites·7 claims
- 0279USD435049SPortable pumpTSAI CHENG-CHANG·Filed 2000·Granted Dec 12, 2000·27 cites·1 claims
- 0372USD833841STorsion wrenchMYTOOLS ENTPR CO LTD·Filed 2017·Granted Nov 20, 2018·15 cites·1 claims
- 0468US8347759B2Well coated wrenchTSAI CHENG-CHANG·Filed 2010·Granted Jan 8, 2013·4 cites·1 claims
- 0566US6155781APortable electric air pumpFiled 1999·Granted Dec 5, 2000·33 cites·2 claims
- 0665US7584686B2Quick release mechanism for socket wrenchTSAI CHENG CHANG·Filed 2007·Granted Sep 8, 2009·6 cites·12 claims
- 0758US11212093B2Method of social key recovery and related deviceHTC CORP·Filed 2019·Granted Dec 28, 2021·1 cites·21 claims
- 0851US2016023361A1CutterTSAI CHENG-CHANG·Filed 2014·Application pending·0 cites
- 0947US11541513B2Plumbing pliersMYTOOLS ENTPR CO LTD·Filed 2020·Granted Jan 3, 2023·0 cites·1 claims
- 1046US2015028980A1TransformerDELTA ELECTRONICS INC·Filed 2014·Application pending·0 cites
- 1142US2012174716A1Insulated ratchet wrenchTSAI CHENG-CHANG·Filed 2011·Application pending·0 cites
- 1242US2014085030A1TransformerDELTA ELECTRONICS INC·Filed 2013·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →