Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6422757 | Active piezoelectric spindle bearing preload adjustment mechanism | Tung-Chuan Wu, Jih-Jong Hsu, Kuan-Wen Chen | 2002-07-23 |
| 6398418 | Shaft having thermal expansion, thermal pre-load yielding and dynamic pre-load adjusting systems | Jih-Jong Hsu, Shang-Liang Chen | 2002-06-04 |
| 6373158 | Motor main shaft provided with fast cooling means | Jih-Jong Hsu | 2002-04-16 |