Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619848 | Ceramic dynamic pressure bearing, motor with bearing, hard disc apparatus and polygon scanner | Hironobu Ishikawa, Tetsuji Yogo | 2003-09-16 |
| 5994250 | Sintered ceramic bodies and ceramic working tools | Keiji Suzuki, Tetsuji Yogo | 1999-11-30 |
| 5916833 | Sintered ceramic bodies and ceramic metal working tools | Keiji Suzuki, Tetsuji Yogo | 1999-06-29 |