Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182005 | Cylinder lock with reinforcements to improve structural strength | Cheng-Chung Liu | 2012-05-22 |
| 8182006 | Cylinder lock having a reinforcement structure coupled to an outer rose disc | Cheng-Chung Liu | 2012-05-22 |
| 7748758 | Cylinder lock having improved torsional strength | Jeff Fang, Cheng-Chung Liu | 2010-07-06 |
| 7748759 | Door lock having an unlocking mechanism for simultaneously unlatching latch-bolt and deadbolt mechanisms | Po-Yang Chen | 2010-07-06 |
| 7581421 | Door lock assembly having a support structure to support a tailpiece and a retaining plate | Po-Yang Chen, Ching-Chuan Kuo | 2009-09-01 |
| 7073829 | Restoring structure of a lock | Ching-Chuan Kuo, Tsung-Chung Huang | 2006-07-11 |
| 7066507 | Post-removable construction of a door lock device | — | 2006-06-27 |
| 6935148 | Lock engaging-and-disengaging mechanism | — | 2005-08-30 |
| 6575006 | Lock | — | 2003-06-10 |
| 6230528 | Adjustable device for an auxiliary lock | Ching-Chuan Kuo | 2001-05-15 |
| 5722273 | Latch bolt operating device | San-Yi Lin, Ching-Chuan Kuo, Tong-Pei Wu, 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, San-Yi Lin +1 more | 1997-09-16 |
| 5655393 | Door lock set with simultaneously retractable deadbolt and latch | Ching-Chuan Kuo | 1997-08-12 |
| 5551264 | Door lock having a deadbolt assembly with a low-cost corrosion-resistant bolt member | Yaw-Shin Fann, San-Yi Lin, Ching-Chuan Kuo, Ming-Shyang Chiou | 1996-09-03 |
| 5474346 | Face plate adapted to be inserted into a bore of a door | Yaw-Shin Fann, San-Yi Lin, Rong-Faa Wu, Ching-Chuan Kuo | 1995-12-12 |
| 5385374 | Reinforced cylindrical door lock set | Yaw-Shin Fann, San-Yi Lin, Rong-Faa Wu, Ching-Chuan Kuo | 1995-01-31 |