Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5246535 | Method and apparatus for controlling the diameter of a silicon single crystal | Akihiro Kawashima, Tatsuo Sato | 1993-09-21 |
| 5176787 | Method and apparatus for measuring the diameter of a silicon single crystal | Akihiro Kawashima, Tatsuo Sato | 1993-01-05 |
| 5164039 | Apparatus for controlling the diameter of silicon single crystal | Akihiro Kawashima, Tatsuo Sato | 1992-11-17 |