Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8757644 | Wheelchair | — | 2014-06-24 |
| 4676194 | Apparatus for thin film formation | Kouichi Yamaguchi | 1987-06-30 |
| 4657774 | Method for thin film formation | Kouichi Yamaguchi | 1987-04-14 |
| 4656052 | Process for production of high-hardness boron nitride film | Kohichi Yamaguchi | 1987-04-07 |