Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5722273 | Latch bolt operating device | Ching-Chuan Kuo, Tong-Pei Wu, Lan-Kun Don, Sheen-Youl Gao | 1998-03-03 |
| 5666833 | Reinforcing apparatus for a lever handle of a door lock | Sheen-Youl Gao, Rong-Faa Wu, Ming-Shyang Chiao, Cheng-Wen Lai, Ching-Chuan Kuo +1 more | 1997-09-16 |
| 5551264 | Door lock having a deadbolt assembly with a low-cost corrosion-resistant bolt member | Yaw-Shin Fann, Ching-Chuan Kuo, Lan-Kun Don, Ming-Shyang Chiou | 1996-09-03 |
| 5551740 | Retaining assembly for retaining releasably a door at a desired open position to a door frame | Song-Gen Shyu, Tong-Pei Wu | 1996-09-03 |
| 5474346 | Face plate adapted to be inserted into a bore of a door | Yaw-Shin Fann, Rong-Faa Wu, Ching-Chuan Kuo, Lan-Kun Don | 1995-12-12 |
| 5385374 | Reinforced cylindrical door lock set | Yaw-Shin Fann, Rong-Faa Wu, Ching-Chuan Kuo, Lan-Kun Don | 1995-01-31 |
| 5301526 | Lock set with improved spindle mechanism | Yaw-Shin Fann, Ming-Shyang Chiou, Rong-Faa Wu, Ching-Chuan Kuo | 1994-04-12 |
| 5074605 | Duplex latch-bolt mechanism | Yaw-Shin Fann, Ching-Chuan Kuo, Ming-Shyang Chiou | 1991-12-24 |