Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9073184 | Controlling structure for a unidirectional ratchet wrench | Yu-Wen Chen | 2015-07-07 |
| 8683894 | Positioning structure for a ratchet wrench | Yu-Wen Chen | 2014-04-01 |
| 6881670 | Interconnect process and method for removing metal silicide | Yi-Nan Chen, Jin-Tau Huang | 2005-04-19 |
| 6833081 | Method of metal etching post cleaning | Yi-Nan Chen, Hui-Min Mao, Shih-Chieh Kao | 2004-12-21 |