Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846903 | Method for producing a grain oriented electrical steel sheet | Kouji Yamasaki, Yasunori Tano, Hiroshi Nishizaka | 1989-07-11 |
| 4434976 | Concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel | Shozo Murakami, Hiroyuki Aoki, Saburo Matsuo, Kenji Yamaura | 1984-03-06 |