Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4457778 | Steelmaking process with separate refining steps | Hiroyuki Nakashima, Hiroki Goto | 1984-07-03 |
| 4411696 | Steelmaking process with separate refining steps | Hiroyuki Nakashima, Hiroki Goto | 1983-10-25 |
| 4388112 | Steelmaking process with separate refining steps | Hiroyuki Nakashima, Hiroki Goto | 1983-06-14 |