Inventor · disambiguated record
Hwai Sian Tsai
Also filed as: TSAI HWAI SIAN
45 granted patents·8 pending applications·155 citations·filing 2004–2024
97Inventor score
Top patents by PatentIndex Score
53 records- 0193US8840017B2Power management circuitry in peripheral accessories of audio devicesCHAN WING CHEONG·Filed 2012·Granted Sep 23, 2014·40 cites·30 claims
- 0293US8336771B2Payment card terminal dongle for communications devicesTSAI HWAI SIAN·Filed 2010·Granted Dec 25, 2012·87 cites·14 claims
- 0389US11251611B2Power management circuitry in peripheral accessories of audio devicesBBPOS LTD·Filed 2020·Granted Feb 15, 2022·2 cites·19 claims
- 0486US12340369B2System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatusSTRIPE INC·Filed 2024·Granted Jun 24, 2025·0 cites·20 claims
- 0586US10686313B2Power management circuitry in peripheral accessories of audio devicesBBPOS LTD·Filed 2019·Granted Jun 16, 2020·3 cites·20 claims
- 0686US9489548B2Magnetic stripe reader with card swipe information feedbackBBPOS LTD·Filed 2015·Granted Nov 8, 2016·4 cites·3 claims
- 0785US12125041B2System and methods to prevent unauthorized usage of card readersSTRIPE INC·Filed 2023·Granted Oct 22, 2024·0 cites·18 claims
- 0883US9129166B2Magnetic stripe reader with card swipe information feedbackLO CHI WAH·Filed 2014·Granted Sep 8, 2015·5 cites·17 claims
- 0982US12056701B2System and method to protect privacy of Personal-Identification-Number entry on consumer mobile device and computing apparatusSTRIPE INC·Filed 2023·Granted Aug 6, 2024·0 cites·20 claims
- 1082US2024330897A1System and method for indicating entry of personal identification numberSTRIPE INC·Filed 2024·Application pending·0 cites
- 1181US12039519B2System and method for indicating entry of personal identification numberSTRIPE INC·Filed 2023·Granted Jul 16, 2024·0 cites·20 claims
- 1280US11809528B2Terminal hardware configuration systemSTRIPE INC·Filed 2019·Granted Nov 7, 2023·2 cites·17 claims
- 1380US11710134B2System and methods to prevent unauthorized usage of card readersSTRIPE INC·Filed 2022·Granted Jul 25, 2023·0 cites·20 claims
- 1480US10256627B2Power management circuitry in peripheral accessories of audio devicesBBPOS LTD·Filed 2017·Granted Apr 9, 2019·2 cites·20 claims
- 1580US9793712B2Power management circuitry in peripheral accessories of audio devicesBBPOS LTD·Filed 2014·Granted Oct 17, 2017·4 cites·20 claims
- 1679US10521793B2System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatusBBPOS LTD·Filed 2017·Granted Dec 31, 2019·1 cites·17 claims
- 1778US12008428B2System and method for a near field communications reader deviceSTRIPE INC·Filed 2023·Granted Jun 11, 2024·0 cites·20 claims
- 1878US10832019B2System and method for a near field communications reader deviceBBPOS LTD·Filed 2019·Granted Nov 10, 2020·1 cites·20 claims
- 1974US11804711B2Power management circuitry in peripheral accessories of audio devicesSTRIPE INC·Filed 2022·Granted Oct 31, 2023·0 cites·18 claims
- 2074US11714974B2System and method for a near field communications reader deviceSTRIPE INC·Filed 2022·Granted Aug 1, 2023·0 cites·20 claims
- 2173USRE49614ESystem and method for a secure display moduleSTRIPE INC·Filed 2021·Granted Aug 15, 2023·0 cites·17 claims
- 2273US11663584B2System and method for indicating entry of personal identification numberSTRIPE INC·Filed 2021·Granted May 30, 2023·0 cites·20 claims
- 2373US11062299B2System and method for indicating entry of personal identification numberBBPOS LTD·Filed 2019·Granted Jul 13, 2021·0 cites·20 claims
- 2473US10318959B2System and methods to prevent unauthorized usage of card readersBBPOS LTD·Filed 2018·Granted Jun 11, 2019·0 cites·20 claims
- 2572US12210596B2Terminal hardware configuration systemSTRIPE INC·Filed 2023·Granted Jan 28, 2025·0 cites·16 claims
- 2672US11321719B2System and methods to prevent unauthorized usage of card readersBBPOS LTD·Filed 2020·Granted May 3, 2022·0 cites·20 claims
- 2771US11756033B2System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatusSTRIPE INC·Filed 2022·Granted Sep 12, 2023·0 cites·20 claims
- 2871US11288670B2System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatusBBPOS LTD·Filed 2020·Granted Mar 29, 2022·0 cites·20 claims
- 2969US11256885B2System and method for a near field communications reader deviceBBPOS LTD·Filed 2020·Granted Feb 22, 2022·0 cites·20 claims
- 3069US10832252B2System and methods to prevent unauthorized usage of card readersBBPOS LMITED·Filed 2019·Granted Nov 10, 2020·0 cites·20 claims
- 3168US10055738B2System and methods to prevent unauthorized usage of card readersBBPOS LTD·Filed 2016·Granted Aug 21, 2018·0 cites·19 claims
- 3266US2025104084A1System and method to prevent unauthorized usage of card readers and modular electronic funds transfer point of sale deviceSTRIPE INC·Filed 2024·Application pending·0 cites
- 3365USRE48707ESystem and method for a secure display moduleBBPOS LTD·Filed 2019·Granted Aug 24, 2021·0 cites·15 claims
- 3465US10832243B2System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatusBBPOS LTD·Filed 2019·Granted Nov 10, 2020·0 cites·2 claims
- 3563US11630575B2System and method for a keypad on a touch screen deviceSTRIPE INC·Filed 2021·Granted Apr 18, 2023·0 cites·20 claims
- 3658US10936189B2System and method for a keypad on a touch screen deviceBBPOS LTD·Filed 2018·Granted Mar 2, 2021·0 cites·10 claims
- 3757US12169841B2System and method to prevent unauthorized usage of card readers and modular electronic funds transfer point of sale deviceSTRIPE INC·Filed 2021·Granted Dec 17, 2024·0 cites·20 claims
- 3857USRE49888ESystem and method for mounting a magnetic card reader head onto a card readerSTRIPE INC·Filed 2019·Granted Mar 26, 2024·0 cites·14 claims
- 3957USRE48167EMagnetic stripe reader with card swipe information feedbackBBPOS LTD·Filed 2018·Granted Aug 18, 2020·0 cites·21 claims
- 4057US9264228B2System and method for a secure display moduleLO CHI WAH·Filed 2014·Granted Feb 16, 2016·0 cites·14 claims
- 4157US2024338698A1System and method for personal identification number entry in a commercial off the shelf communication deviceSTRIPE INC·Filed 2022·Application pending·0 cites
- 4256US10841773B2System and method for adjusting variable(s) related to near field communications antenna for mobile devices to ensure antenna operation within a defined operating rangeBBPOS LTD·Filed 2019·Granted Nov 17, 2020·0 cites·20 claims
- 4355US10499225B2System and method for adjusting variable(s) related to near field communications antenna for mobile devices to ensure antenna operation within a defined operating rangeBBPOS LTD·Filed 2014·Granted Dec 3, 2019·0 cites·11 claims
- 4455US9633234B2System and method for a secure display moduleBBPOS LTD·Filed 2016·Granted Apr 25, 2017·0 cites·8 claims
- 4554US2019034900A1Modular electronic funds transfer point of sale deviceBBPOS LTD·Filed 2018·Application pending·0 cites
- 4650US9613234B2System and method for mounting a magnetic card reader head onto a card readerBBPOS LTD·Filed 2013·Granted Apr 4, 2017·0 cites·8 claims
- 4748US2005157854A1Telephone recording systemFiled 2004·Application pending·0 cites
- 4846US2013131541A1Cell phone app for coupling a cell phone to a basal body temperature thermometer for predicting ovulationTSAI HWAI SIAN·Filed 2011·Application pending·0 cites
- 4944US9363620B2System for controlling audio frequencies of electronic appliances and a method of the sameBBPOS LTD·Filed 2013·Granted Jun 7, 2016·0 cites·3 claims
- 5037US2014274210A1Dual sim card adapter for mobile deviceETERNAL ELECTRONICS LTD·Filed 2014·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hwai Sian Tsai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →