Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9898983 | Source driving device with 3 types of gate oxide layer | Yu-Hao Hsu, Ming-Han Lee, Wei-Cheng Lin | 2018-02-20 |
| 9368570 | Integrated circuit of driving device with different operating voltages | Yu-Hao Hsu | 2016-06-14 |
| 5556144 | Auxiliary door latch having a locking device | — | 1996-09-17 |
| 5544507 | Door lock assembly | — | 1996-08-13 |
| 5461221 | Codeable card for card reader | — | 1995-10-24 |
| 5447047 | Dead bolt of a door lock | — | 1995-09-05 |
| 5372025 | Outer handle of a door lock | — | 1994-12-13 |
| 5354109 | Dead bolt assembly for tubular door locks | — | 1994-10-11 |
| 5325687 | Control mechanism for a door lock | — | 1994-07-05 |
| 5286074 | Handle lock | — | 1994-02-15 |
| 5284372 | Locking mechanism of a latch bolt | — | 1994-02-08 |
| 5257838 | Dead bolt assembly for tubular door locks | — | 1993-11-02 |
| 5216910 | Auxiliary lock with an anti-breakage device | — | 1993-06-08 |
| 5211432 | Latch unit for door locks | — | 1993-05-18 |
| RE34240 | Tubular door lock with an adjustable device for setting the dead bolt | — | 1993-05-04 |
| 5199285 | Locking device for an auxiliary lock | — | 1993-04-06 |
| 5186030 | Locking device for an auxiliary lock | — | 1993-02-16 |
| 5176416 | Auxiliary lock | — | 1993-01-05 |
| 5150592 | Locking device for an auxiliary lock | — | 1992-09-29 |
| 5088778 | Handle lock with improved engagement and linking-up | — | 1992-02-18 |
| 5074607 | Lock set with spindle lock | — | 1991-12-24 |
| 5040391 | Structure for controlling the dead bolt used in an electronic lock | — | 1991-08-20 |
| 5020837 | Tubular door lock with plate shaped bolt actuator | — | 1991-06-04 |
| 5010749 | Locking device for an auxiliary lock | — | 1991-04-30 |
| 4979767 | Opening device for a double lock | — | 1990-12-25 |