Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136091 | Process and apparatus for producing polycrystalline semiconductor ingot | Tetsuhiro Okuno | 2000-10-24 |
| 5778714 | Method for manufacturing seamless pipe | Tatsuro Katsumura, Takashi Ariizumi, Masahiko Yasukawa | 1998-07-14 |