Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9265924 | Needle-free connector | Ming-Chung Chen | 2016-02-23 |
| 9212772 | Needle free connector | Ming-Chung Chen | 2015-12-15 |
| 9162348 | Steering and positioning structure of a ratchet screwdriver | — | 2015-10-20 |
| 8979804 | Needleless connector | Ming-Chung Chen | 2015-03-17 |
| 8656811 | Folding hand tool | — | 2014-02-25 |
| 7398710 | Rotary positioning structure of a ratchet screwdriver | — | 2008-07-15 |
| 7089828 | Ratchet screwdriver with a quick retractable positioning joint | — | 2006-08-15 |
| D508644 | Screwdriver handle | — | 2005-08-23 |
| D468618 | Handle of a hand tool | — | 2003-01-14 |
| 6435061 | Ratchet screwdriver | — | 2002-08-20 |
| 6393949 | Ratchet screwdriver | — | 2002-05-28 |
| 6389932 | Ratchet wrench | — | 2002-05-21 |
| 6240810 | Ratchet screwdriver having a concealable ratchet shifter | — | 2001-06-05 |