Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848754 | Flash smelting furnace | Nobumasa Kemori, Yasuhiro Kondo | 1989-07-18 |
| 4824362 | Method for operation of flash smelting furnace | Takayoshi Kimura, Yoshiaki Mori | 1989-04-25 |
| 4798532 | Flash smelting furnace | Takayoshi Kimura, Yoshiaki Mori | 1989-01-17 |