Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6284016 | Pressure converter steelmaking method | Shinya Kitamura, Kenichiro Naito | 2001-09-04 |
| 5454854 | Method of refining molten metal or molten alloy | Kazuumi Harashima, Ryoji Arima | 1995-10-03 |