Issued Patents All Time
Showing 25 most recent of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12340369 | System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatus | Hwai Sian Tsai, Namson Kwok | 2025-06-24 |
| 12210596 | Terminal hardware configuration system | Hwai Sian Tsai | 2025-01-28 |
| 12169841 | System and method to prevent unauthorized usage of card readers and modular electronic funds transfer point of sale device | Hwai Sian Tsai | 2024-12-17 |
| 12125041 | System and methods to prevent unauthorized usage of card readers | Hwai Sian Tsai | 2024-10-22 |
| 12056701 | System and method to protect privacy of Personal-Identification-Number entry on consumer mobile device and computing apparatus | Hwai Sian Tsai, Namson Kwok | 2024-08-06 |
| 12039519 | System and method for indicating entry of personal identification number | Hwai Sian Tsai | 2024-07-16 |
| 12008428 | System and method for a near field communications reader device | Hwai Sian Tsai | 2024-06-11 |
| RE49888 | System and method for mounting a magnetic card reader head onto a card reader | Hwai Sian Tsai, Kin Wai Chan | 2024-03-26 |
| 11809528 | Terminal hardware configuration system | Hwai Sian Tsai | 2023-11-07 |
| 11804711 | Power management circuitry in peripheral accessories of audio devices | Wing Cheong Chan, Hwai Sian Tsai | 2023-10-31 |
| 11756033 | System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatus | Hwai Sian Tsai, Namson Kwok | 2023-09-12 |
| RE49614 | System and method for a secure display module | Hwai Sian Tsai | 2023-08-15 |
| 11714974 | System and method for a near field communications reader device | Hwai Sian Tsai | 2023-08-01 |
| 11710134 | System and methods to prevent unauthorized usage of card readers | Hwai Sian Tsai | 2023-07-25 |
| 11663584 | System and method for indicating entry of personal identification number | Hwai Sian Tsai | 2023-05-30 |
| 11640593 | System and method for vending machine | Tai Kwan Jimmy Tang, Wai Chuen Gan | 2023-05-02 |
| 11630575 | System and method for a keypad on a touch screen device | Hwai Sian Tsai | 2023-04-18 |
| 11595799 | System and method for secure pairing of Bluetooth devices | — | 2023-02-28 |
| 11580208 | System and method for PIN entry on mobile devices | — | 2023-02-14 |
| 11321719 | System and methods to prevent unauthorized usage of card readers | Hwai Sian Tsai | 2022-05-03 |
| 11288670 | System and method to protect privacy of personal-identification-number entry on consumer mobile device and computing apparatus | Hwai Sian Tsai, Namson Kwok | 2022-03-29 |
| 11256885 | System and method for a near field communications reader device | Hwai Sian Tsai | 2022-02-22 |
| 11251611 | Power management circuitry in peripheral accessories of audio devices | Wing Cheong Chan, Hwai Sian Tsai | 2022-02-15 |
| RE48707 | System and method for a secure display module | Hwai Sian Tsai | 2021-08-24 |
| 11062299 | System and method for indicating entry of personal identification number | Hwai Sian Tsai | 2021-07-13 |