Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10766125 | Ratchet screwdriver | Chung-Yu Tsai | 2020-09-08 |
| 10545013 | Measuring tape assembly | Chung-Yu Tsai | 2020-01-28 |
| 10384334 | Ratchet screwdriver | Chung-Yu Tsai | 2019-08-20 |
| 9577324 | Wearable electronic device | Chun-Lung Chen, Ji-Dein WU, Shih-Ling Huang, Yu-Feng Lin, Yen-Liang Liu +2 more | 2017-02-21 |
| 9478901 | Electronic product and its cable set | Chun-Lung Chen, Ji-Dein WU, Shih-Ling Huang, Yu-Feng Lin, Yen-Liang Liu +2 more | 2016-10-25 |
| 9278435 | Ratchet screwdriver | — | 2016-03-08 |
| 8051747 | One-way ratchet wrench | — | 2011-11-08 |
| 8020473 | Handle of a hand tool having grinding capabilities | — | 2011-09-20 |
| D533428 | Hand tool handle | — | 2006-12-12 |
| D531878 | Handle for a hand tool | — | 2006-11-14 |
| D531480 | Handle for a hand tool | — | 2006-11-07 |
| D531006 | Handle for a hand tool | — | 2006-10-31 |
| D486381 | Tool suspension plate | — | 2004-02-10 |
| D465986 | Handle of hand tool | — | 2002-11-26 |
| 6405396 | Screwdriver assembly with an extendable rod | — | 2002-06-18 |
| D441269 | Handle for a hand tool | — | 2001-05-01 |
| D408258 | Tool handle | — | 1999-04-20 |
| 4987998 | Retention device for collecting sockets and wrenches | — | 1991-01-29 |