Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8087561 | Powder-actuated fastener-driving device capable of power adjustment | — | 2012-01-03 |
| D543819 | Powder actuated tool | — | 2007-06-05 |
| D491230 | Punch device | — | 2004-06-08 |
| RE38219 | Mold-pressing device | Cheng-Nan Chen | 2003-08-19 |
| 6513413 | Mold-pressing device | — | 2003-02-04 |
| D468603 | Riveting tool | — | 2003-01-14 |
| 6428248 | Punch for production decorative cutouts | — | 2002-08-06 |
| 6089137 | Paper punch | — | 2000-07-18 |
| 5962804 | Actuating device of a dynamite gun | — | 1999-10-05 |
| 5749278 | Mold-pressing device | Cheng-Nan Chen | 1998-05-12 |
| 5715983 | Firing mechanism for a staple gun | — | 1998-02-10 |
| 5699948 | Adjusting means for use in a staple gun | — | 1997-12-23 |