Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6702466 | Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, polygon scanner, and method for manufacturing ceramic dynamic-pressure bearing | Hironobu Ishikawa, Junya Moribe | 2004-03-09 |
| 6696376 | Zirconia containing ceramic ball, method for manufacturing same, ceramic ball bearing and check valve | Tomonori Niwa | 2004-02-24 |