Patents per Year
Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12174375 | Head-mounted display device and zoomable optical device thereof | Ting Chen, Po-Lun Chen, Yun Chen | 2024-12-24 |
| D490975 | Suspension device for a screw driver assembly | — | 2004-06-08 |
| 6401301 | Screwdriver grip structure | — | 2002-06-11 |
| 6397708 | Screwdriver grip | — | 2002-06-04 |
| 6389626 | Tool structure | — | 2002-05-21 |
| D454047 | Soft sleeve of tool handle | — | 2002-03-05 |
| 6336383 | Wrench structure | — | 2002-01-08 |
| D452127 | Tool clamping seat | — | 2001-12-18 |
| D443415 | Tool kit | — | 2001-06-12 |
| D442715 | Illuminating tool | — | 2001-05-22 |
| D442050 | Handle for a screwdriver | — | 2001-05-15 |
| 6145995 | Precision screwdriver | — | 2000-11-14 |
| D421887 | Screwdriver | — | 2000-03-28 |
| D396622 | Handle of a screwdriver | — | 1998-08-04 |