Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10047544 | Transmission device of electronic lock | Tony Yen, Po-Yang Chen, Wei-Liang Chiang, Song-Gen Shyu, Kun-Chen Lee | 2018-08-14 |
| 8621900 | Electric door lock | Tong-Yi Ho, Kun-Chen Tsai, Chen-Ming Lin, Ching-Chuan Kuo | 2014-01-07 |
| 7975518 | Re-keyable lock with improvements for preventing incomplete re-keying | Wei-Liang Chiang, Ju-Lin Yang, Ching-Chuan Kuo | 2011-07-12 |
| 7874191 | Cylinder lock | Wei-Liang Chiang, Ju-Lin Yang, Po-Yang Chen, Kun-Chen Lee, Ching-Chuan Kuo | 2011-01-25 |
| 7137657 | Reinforced apparatus for a lever handle of a door lock | Ching-Chuan Kuo, Po-Yang Chen | 2006-11-21 |
| 6615630 | Door lock | Kun-Chen Tsai, Po-Yang Chen | 2003-09-09 |
| 5927777 | Lock set with improved spindle construction | Ching-Chuan Kuo, Ming-Shyang Chiou, Cheng-Wen Lai, Po-Yang Chen | 1999-07-27 |
| 5788296 | Lock set with improved spindle construction | Ching-Chuan Kuo, Ming-Shyang Chiou, Cheng-Wen Lai, Po-Yang Chen | 1998-08-04 |
| 5666833 | Reinforcing apparatus for a lever handle of a door lock | Sheen-Youl Gao, Ming-Shyang Chiao, Cheng-Wen Lai, San-Yi Lin, Ching-Chuan Kuo +1 more | 1997-09-16 |
| 5474346 | Face plate adapted to be inserted into a bore of a door | Yaw-Shin Fann, San-Yi Lin, Ching-Chuan Kuo, Lan-Kun Don | 1995-12-12 |
| 5385374 | Reinforced cylindrical door lock set | Yaw-Shin Fann, San-Yi Lin, Ching-Chuan Kuo, Lan-Kun Don | 1995-01-31 |
| 5301526 | Lock set with improved spindle mechanism | Yaw-Shin Fann, San-Yi Lin, Ming-Shyang Chiou, Ching-Chuan Kuo | 1994-04-12 |
| 5222383 | Cylinder lock | Yaw-Shin Fann, Ching-Chuan Kuo | 1993-06-29 |
| 5102175 | Deadbolt assembly for cylinder lock | Shoei-Jyi Wu | 1992-04-07 |
| 4927199 | Latch assembly for cylinder lock | Shoei-Jyi Wu | 1990-05-22 |
| 4927195 | Dual backset deadbolt assembly | Shoei-Jyi Wu | 1990-05-22 |
| 4768817 | Dead bolt assembly | Yaw-Shin Fann | 1988-09-06 |
| 4760722 | Cylinder lock | Yaw-Shin Fann | 1988-08-02 |
| 4711477 | Duplex latch bolt mechanism | Yaw-Shin Fann | 1987-12-08 |
| 4639025 | Adjustable dead bolt assembly | Yaw-Shin Fann | 1987-01-27 |