Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12291916 | Easy-to-install door opener | — | 2025-05-06 |
| 11851935 | Door opener capable of controlling door closing speed | — | 2023-12-26 |
| 11834889 | Door opener with adjustable screw rod | — | 2023-12-05 |
| 11828097 | Door opener having an anti-loose linking unit | — | 2023-11-28 |
| 11795751 | Driving device for a door opener | — | 2023-10-24 |
| 11753848 | Door lock with reinforced fireproof function | — | 2023-09-12 |
| 11629544 | Door opener with exposed control panel | — | 2023-04-18 |
| D915178 | Latch stopper for a double door | — | 2021-04-06 |
| D897818 | Latch coupling device | — | 2020-10-06 |
| D897817 | Stopper for a top or bottom latch | — | 2020-10-06 |
| 10274443 | Urea concentration identification method | Tzu-Yu Liu, Kuo-Chuang Chiu, Yeh-Chyang Huang | 2019-04-30 |
| 10267063 | Electric door lock | Hsi-Ting Lin | 2019-04-23 |
| 10208508 | Modularized electric door lock | — | 2019-02-19 |
| 9766193 | Liquid concentration detecting device | Tzu-Yu Liu, Kuo-Chuang Chiu, Shiou-Lan Hu, Yeh-Chyang Huang | 2017-09-19 |
| 9435141 | Panic exit door lock with an indication of a locking state | — | 2016-09-06 |
| 9353547 | Outer operating device for a door lock | — | 2016-05-31 |
| 9273495 | Panic exit door lock with an indication of a locking state | — | 2016-03-01 |
| 9145709 | Driving member for an outer operational device of a door lock | — | 2015-09-29 |
| 9145712 | Lock cylinder for a door lock | — | 2015-09-29 |
| 8979140 | Latch with an automatic locking function for a double door | — | 2015-03-17 |
| 8826705 | Outer operational device for a door lock | — | 2014-09-09 |
| 8702132 | Latch assembly for a passageway door lock | — | 2014-04-22 |
| 8641104 | Latch device with a clutch function | — | 2014-02-04 |
| 8544897 | Stop device for door lock for panic exit door | — | 2013-10-01 |
| 8523248 | Latch assembly with a safety device for a fireproof door lock | — | 2013-09-03 |