Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759399 | Method and apparatus for producing hollow metal ingots | Kenji Saito, Yukio Oguchi, Toshio Kato, Hideshi Ohzu, Kanji Aizawa | 1988-07-26 |
| 4615373 | Method and an apparatus for manufacturing a hollow steel ingot | Kenji Saito, Kyoji Nakanishi, Akihiko Nanba, Masayuki Onishi, Toshio Kato +1 more | 1986-10-07 |