Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8015894 | Intelligent transmission element | Yi-Chyun Hwang, Chun-Lin Yu | 2011-09-13 |
| 7788987 | Self-lubricating ball screw | Yan-Yu Chen | 2010-09-07 |
| 7487692 | Guiding device for ball nut | Yan-Yu Chen | 2009-02-10 |
| 7234368 | Ball screw device having lubricating structure | Yan-Yu Chen | 2007-06-26 |