Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832606 | Wire saw and cutting method thereof | Kiyoshi Yamada, Hirofumi Takei | 2004-12-21 |
| 4837193 | Hydrotreating catalyst and process of manufacture | Ikuo Akizuki, Hiroshi Kaya, Shohei Okano, Keiji Kumagai, Yoshihito Kaneko | 1989-06-06 |