Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11370042 | Cutter | — | 2022-06-28 |
| 11203108 | Grip device for hexagonal wrenches | — | 2021-12-21 |
| 11173619 | Effort-saving cutter | — | 2021-11-16 |
| 11103985 | Grip device for hexagonal wrenches | — | 2021-08-31 |
| 11072056 | Grip bar for hexagonal wrench | — | 2021-07-27 |
| 10766125 | Ratchet screwdriver | Chiung-Chang Tsai | 2020-09-08 |
| 10596692 | Tool combination | — | 2020-03-24 |
| 10545013 | Measuring tape assembly | Chiung-Chang Tsai | 2020-01-28 |
| 10434638 | Tool box assembly | — | 2019-10-08 |
| 10384334 | Ratchet screwdriver | Chiung-Chang Tsai | 2019-08-20 |
| 10022847 | Magnetic sleeve for positioning screwdriver bit | — | 2018-07-17 |
| 9969076 | Connection device for hexagonal wrench | — | 2018-05-15 |
| 9908230 | Tool assembly | — | 2018-03-06 |
| 9902050 | Magnetic positioning device for hand tool | — | 2018-02-27 |
| 9789615 | Cutter | — | 2017-10-17 |
| 9718174 | Hand tool assembly with magnetic securing device | — | 2017-08-01 |
| 9696224 | Torque detection device | — | 2017-07-04 |
| 9406423 | Magnetic sleeve assembly | — | 2016-08-02 |
| 8134836 | Packaged heat dissipating assembly for an intermediate bus converter | Bo-Hao Lin, Yu-Kun Sun | 2012-03-13 |
| 7066074 | Fluid motor | Kun-Tzu Lin, Shih-Liang Cheng, Cheng-Chiang Chuang | 2006-06-27 |