Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943398 | Method for manufacturing a fused cast refractory | Shigeo Endo, Haruo Kawashima, Kimio Hirata, Yasuo Saito, Hideo Yanagi | 1990-07-24 |
| 4670318 | Laminar block and method of and apparatus for producing the laminar block | Haruo Kawashima | 1987-06-02 |