Inventor · disambiguated record
Chang Liu
Also filed as: LIU CHANG · LIU CHANG-FU
7 granted patents·4 pending applications·33 citations·filing 1998–2018
80Inventor score
Top patents by PatentIndex Score
11 records- 0176US9984218B2Motion-based identity authentication of an individual with a communications deviceUNIV OHIO·Filed 2015·Granted May 29, 2018·2 cites·26 claims
- 0274US9207772B2Motion-based identity authentication of an individual with a communications deviceUNIV OHIO·Filed 2014·Granted Dec 8, 2015·3 cites·24 claims
- 0373US9921741B2Motion-based identity authentication of an individual with a communications deviceUNIV OHIO·Filed 2014·Granted Mar 20, 2018·3 cites·23 claims
- 0460US10460096B2Motion-based identity authentication of an individualUNIV OHIO·Filed 2014·Granted Oct 29, 2019·1 cites·25 claims
- 0549US5911651ADumbbell with weights having eccentric lock for securing to grip rodFiled 1998·Granted Jun 15, 1999·24 cites·7 claims
- 0646US2016125758A1Assessing cognitive function using a multi-touch deviceUNIV OHIO·Filed 2015·Application pending·0 cites
- 0745US2016035247A1Visual feedback generation in tracing a patternUNIV OHIO·Filed 2015·Application pending·0 cites
- 0843US10887317B2Progressive authentication security adapterSAP SE·Filed 2018·Granted Jan 5, 2021·0 cites·20 claims
- 0943US2016070464A1Two-stage, gesture enhanced input system for letters, numbers, and charactersHONG SIANG LEE·Filed 2014·Application pending·0 cites
- 1042US2016050308A1Movement-based, user identity authenticated unlocking and locking triggers for smartphones and wearable mobile devicesLIU CHANG·Filed 2014·Application pending·0 cites
- 1137US10382415B2Application engagement identification using a dynamic patternUNIV OHIO·Filed 2015·Granted Aug 13, 2019·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →