Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5462010 | Apparatus for supplying granular raw material for a semiconductor single crystal pulling apparatus | Kiyotaka Takano, Izumi Fusegawa, Hirotoshi Yamagishi, Koji Mizuishi | 1995-10-31 |
| 5356113 | Isolation valve for single crystal pulling apparatus | Koji Mizuishi, Kouzou Yokota | 1994-10-18 |