Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659647 | Ceramic dynamic pressure bearing, motor with bearing, hard disk device, and polygon scanner | Atsutoshi Sugiyama, Tetsuji Yogo | 2003-12-09 |
| 6619847 | Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, and polygon scanner | Tetsuji Yogo | 2003-09-16 |
| 6619848 | Ceramic dynamic pressure bearing, motor with bearing, hard disc apparatus and polygon scanner | Tetsuji Yogo, Takayoshi Morishita | 2003-09-16 |