Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5143355 | Apparatus for manufacturing oxygen-free copper | Takuro Iwamura, Tsugio Koya, Izumi Sukekawa, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1992-09-01 |
| 5037471 | Method for manufacturing oxygen-free copper | Takuro Iwamura, Tsugio Koya, Izumi Sukekawa, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1991-08-06 |