Inventor · disambiguated record
Tien-Kao Liu
Also filed as: LIU TIEN KAO
19 granted patents·4 pending applications·222 citations·filing 1998–2019
94Inventor score
Top patents by PatentIndex Score
23 records- 0196US9464462B1Padlock with non-conductive partsFED LOCK CO LTD·Filed 2015·Granted Oct 11, 2016·18 cites·8 claims
- 0294US8919156B1Core replaceable hockey lockFED LOCK CO LTD·Filed 2014·Granted Dec 30, 2014·25 cites·12 claims
- 0392US8707746B1Lock with replaceable bottom pinsFED LOCK CO LTD·Filed 2013·Granted Apr 29, 2014·17 cites·10 claims
- 0491US9631398B1Lock with a slide for covering lock core and positioning device for the slideFED LOCK CO LTD·Filed 2016·Granted Apr 25, 2017·11 cites·15 claims
- 0589US7836735B2Drawer lock setFED LOCK CO LTD·Filed 2009·Granted Nov 23, 2010·21 cites·2 claims
- 0687US8601839B1Deadlocking drawer lockFED LOCK CO LTD·Filed 2012·Granted Dec 10, 2013·11 cites·5 claims
- 0787USD408262SWeather/proof padlockLIU TIEN KAO·Filed 1998·Granted Apr 20, 1999·35 cites·1 claims
- 0886US7536883B1Vandal-resistant combination padlockFED LOCK CO LTD·Filed 2008·Granted May 26, 2009·17 cites·2 claims
- 0985US8904833B1Lock with replaceable shackleFED LOCK CO LTD·Filed 2013·Granted Dec 9, 2014·12 cites·3 claims
- 1084US11408207B2Lock with a long-travel deadboltFED LOCK CO LTD·Filed 2019·Granted Aug 9, 2022·5 cites·10 claims
- 1182US9683390B1Combination lock assemblyFED LOCK CO LTD·Filed 2016·Granted Jun 20, 2017·5 cites·20 claims
- 1282US9587416B1Lock with a slide for covering lock coreFED LOCK CO LTD·Filed 2016·Granted Mar 7, 2017·5 cites·13 claims
- 1378US8650919B2Anti-break lockLIU TIEN-KAO·Filed 2012·Granted Feb 18, 2014·6 cites·14 claims
- 1470US11384569B2Lock with replaceable modulesFED LOCK CO LTD·Filed 2019·Granted Jul 12, 2022·2 cites·19 claims
- 1569US10934745B2Core replaceable hockey lockFED LOCK CO LTD·Filed 2019·Granted Mar 2, 2021·2 cites·18 claims
- 1661US11124993B2Lock with emergency unlocking featureFED LOCK CO LTD·Filed 2019·Granted Sep 21, 2021·1 cites·10 claims
- 1760US6012309APad lock with reliable change of code numberFiled 1999·Granted Jan 11, 2000·29 cites·2 claims
- 1855US9169051B2Package for lock and keyFED LOCK CO LTD·Filed 2013·Granted Oct 27, 2015·0 cites·9 claims
- 1953US2010180650A1Anti-theft lockLIU TIEN-KAO·Filed 2009·Application pending·0 cites
- 2046US2016002958A1Water-dust-proof case for lockFED LOCK CO LTD·Filed 2014·Application pending·0 cites
- 2145US11261619B2Lock with a roller deadboltFED LOCK CO LTD·Filed 2019·Granted Mar 1, 2022·0 cites·9 claims
- 2243US2013276492A1High security lock core structureLIU TIEN-KAO·Filed 2013·Application pending·0 cites
- 2337US2012192603A1High security lock core structureLIU TIEN KAO·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →