Inventor · disambiguated record
Yuan-Fong Chang
Also filed as: CHANG YUAN · CHANG YUAN F · CHANG YUAN-FONG
25 granted patents·9 pending applications·157 citations·filing 1993–2023
94Inventor score
Top patents by PatentIndex Score
34 records- 0188US11813855B2Barcode printerTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2021·Granted Nov 14, 2023·1 cites·10 claims
- 0281US11551021B1Counterfeit paper currency detector with barcode reading functionTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2021·Granted Jan 10, 2023·1 cites·7 claims
- 0381US5906366ACard outlet clearance adjusting device for card stacking machinesGAMEMAX CORP·Filed 1998·Granted May 25, 1999·31 cites·1 claims
- 0467USD816526SCounterfeit currency detectorTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2016·Granted May 1, 2018·11 cites·1 claims
- 0567USD815966SCounterfeit currency detectorTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2016·Granted Apr 24, 2018·11 cites·1 claims
- 0664US9315022B2Inkjet printing apparatus and printing methodCHANG YUAN·Filed 2011·Granted Apr 19, 2016·1 cites·5 claims
- 0758US6029972AToothed wheel operated adjusting device for card stacking machinesGAMEMAX CORP·Filed 1998·Granted Feb 29, 2000·13 cites·3 claims
- 0856US12400509B2Bill receiving boxTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2023·Granted Aug 26, 2025·0 cites·4 claims
- 0956USD1069624SBill receiving boxTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2023·Granted Apr 8, 2025·1 cites·1 claims
- 1055US2013269178A1Printhead mounting and adjusting mechanism for inkjet printerCHANG YUAN·Filed 2013·Application pending·0 cites
- 1155US2013314469A1Printhead mounting and adjusting mechanism for inkjet printerCHANG YUAN·Filed 2013·Application pending·0 cites
- 1252US8820868B2Inkjet printer's ink protection methodCHANG YUAN·Filed 2012·Granted Sep 2, 2014·0 cites·6 claims
- 1352US5896974APaper money exchangerGAMEMAX CORP·Filed 1997·Granted Apr 27, 1999·17 cites·1 claims
- 1452US5509646AMoney box with an anti-theft deviceGAMEMAX CORP·Filed 1994·Granted Apr 23, 1996·10 cites·6 claims
- 1551US5462150ACollecting device for currenciesGAMEMAX CORP·Filed 1994·Granted Oct 31, 1995·23 cites·6 claims
- 1651US2012019592A1Print head mounting and adjusting mechanismCHANG YUAN·Filed 2011·Application pending·0 cites
- 1750USD973765SPrinting machineTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2021·Granted Dec 27, 2022·1 cites·1 claims
- 1850US10964174B1Stored-value card machineTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2019·Granted Mar 30, 2021·0 cites·13 claims
- 1950US5388817ANote stacker mechanismGAMEAX CORP·Filed 1993·Granted Feb 14, 1995·11 cites·4 claims
- 2049US11926149B2PrinterTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2022·Granted Mar 12, 2024·0 cites·10 claims
- 2149US10665049B1Counterfeit paper currency detectorTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2019·Granted May 26, 2020·0 cites·7 claims
- 2249US2020342722A1Straightforward Cash DispenserTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2019·Application pending·0 cites
- 2345US9597892B2Inkjet printing method and inkjet printing apparatusCHANG YUAN·Filed 2013·Granted Mar 21, 2017·0 cites·15 claims
- 2444US9751329B2Method for printing on elevation contours of the print objectCHANG YUAN·Filed 2013·Granted Sep 5, 2017·0 cites·19 claims
- 2544US2022072853A1A printing method for inkjet printersCHANG YUAN·Filed 2019·Application pending·0 cites
- 2642US11127251B1Induction card managing device for a gaming machineTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2020·Granted Sep 21, 2021·0 cites·10 claims
- 2742US5938073ACard stacking and conveyance structure for automatic card vending machinesGAMEMAX CORP·Filed 1997·Granted Aug 17, 1999·17 cites·4 claims
- 2840US2021295649A1Card Managing Device for a Gaming MachineTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2020·Application pending·0 cites
- 2937USD1053246SBarcode printerTOP VENDING MACHINE ELECTRONICS CO LTD·Filed 2021·Granted Dec 3, 2024·0 cites·1 claims
- 3037US2014285565A1Inkjet printing apparatus and printing methodCHANG YUAN·Filed 2012·Application pending·0 cites
- 3136US2014292855A1Inkjet printing apparatus and printing methodCHANG YUAN·Filed 2012·Application pending·0 cites
- 3236US2019210386A1An inkjet printing methodCHANG YUAN·Filed 2017·Application pending·0 cites
- 3333US5485907APaper money recognition and transmission system for vending machinesGAMEMAX CORP·Filed 1994·Granted Jan 23, 1996·5 cites·4 claims
- 3431US5454462AStructure of paper money recognition and transmission systemGAMEMAX CORP·Filed 1994·Granted Oct 3, 1995·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →