Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5180422 | Copper smelting process | Nobuo Kikumoto | 1993-01-19 |
| 5160588 | Process for recovering tellurium from copper electrolysis slime | Yukio Sugawara, Junji Konishi, Shosaku Hayashi | 1992-11-03 |
| 4467449 | Semiconductor integrated circuit | — | 1984-08-21 |
| 4456977 | Semiconductor memory device | — | 1984-06-26 |