Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824362 | Method for operation of flash smelting furnace | Takayoshi Kimura, Yasuo Ojima | 1989-04-25 |
| 4800459 | Circuit substrate having ceramic multilayer structure containing chip-like electronic components | Horshi Takagi, Yukio Sakabe | 1989-01-24 |
| 4798532 | Flash smelting furnace | Takayoshi Kimura, Yasuo Ojima | 1989-01-17 |