Inventor · disambiguated record
Yeh-Ching Chang
Also filed as: CHANG YEH CHING
5 granted patents·3 pending applications·26 citations·filing 2003–2024
75Inventor score
Top patents by PatentIndex Score
8 records- 0187US10434632B2Tool connectorCHANG YEH CHING·Filed 2017·Granted Oct 8, 2019·10 cites·8 claims
- 0270US11628546B2Tool connecting rodUNITEK ENTPR CORP·Filed 2021·Granted Apr 18, 2023·1 cites·8 claims
- 0362US2025214208A1ScrewdriverCHANG YEH CHING·Filed 2024·Application pending·0 cites
- 0460US8915169B2Adjustable driving toolCHANG YEH-CHING·Filed 2013·Granted Dec 23, 2014·3 cites·15 claims
- 0555US6612435B1Tool caseFiled 2003·Granted Sep 2, 2003·11 cites·7 claims
- 0653US8770071B2Electronic torque wrench with a rotatable display unitCHANG YEH-CHING·Filed 2011·Granted Jul 8, 2014·1 cites·9 claims
- 0751US2024359301A1Driver bitMAKITA U S A INC·Filed 2023·Application pending·0 cites
- 0839US2012255404A1Electronic torque wrench with a rotatable display unitCHANG YEH-CHING·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →