Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984392 | Chamfering the notch of a semiconductor wafer | Kenichi Yoshihara | 1991-01-15 |
| 4905425 | Method for chamfering the notch of a notch-cut semiconductor wafer | Kenichi Yoshihara | 1990-03-06 |