Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387884 | Structure of oxygen passage in steel converter vessel supporting trunnion | Masahiko Seki, Koji Wada | 1983-06-14 |
| 4325540 | Apparatus for supplying fluids to a converter | Masahiko Seki | 1982-04-20 |
| 4226563 | Automatic article-laying apparatus | Kouetsu Horikawa, Kiyosuke Mori | 1980-10-07 |