Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405183 | Adjustment device for torque wrench | — | 2025-09-02 |
| 11664094 | Drug-screening system and drug-screening method | Ci-Jie Lin, Chieh-Jen Wang | 2023-05-30 |
| 8767302 | Laminated optical disk | Jong-Woei Whang, Meng-Che Tsai, Chung-Wei Wang, Ya Hui Chang | 2014-07-01 |
| 6877937 | Reversible drill/driver tool | — | 2005-04-12 |
| 6857644 | Tool box provided with a seat unit | — | 2005-02-22 |
| D484387 | Tool handle | — | 2003-12-30 |
| 6592161 | Magnetic sweeper with tool receiving space | — | 2003-07-15 |
| 6571966 | Magnetic storage rack having U-shaped retainers and tool-holding seat | — | 2003-06-03 |
| D474097 | Tool handle | — | 2003-05-06 |
| 6450312 | Easily direction-convertible ratchet assembly for a hand tool | — | 2002-09-17 |
| D461389 | Tool handle | — | 2002-08-13 |
| 6412373 | Operating tool having shanks turnable relative to one another | — | 2002-07-02 |
| 6402212 | Magnetic sweeper | — | 2002-06-11 |
| 6398135 | Air spray device | — | 2002-06-04 |
| 6363820 | Hand tool for driving a fastener about an axis | — | 2002-04-02 |
| D453674 | Tool handle | — | 2002-02-19 |
| 6324058 | Heat-dissipating apparatus for an integrated circuit device | — | 2001-11-27 |
| D446105 | Tool handle | — | 2001-08-07 |
| 6230592 | Turnable tightening device adapted to tighten and thereby facilitating screwing of a screw hook into a wall | — | 2001-05-15 |