Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5143355 | Apparatus for manufacturing oxygen-free copper | Takuro Iwamura, Tsugio Koya, Hideru Hagiwara, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1992-09-01 |
| 5062614 | Apparatus and method for manufacturing copper-base alloy | Haruhiko Asao, Hiroshi Kohno, Yukio Sugawara, Keiji Nogami | 1991-11-05 |
| 5037471 | Method for manufacturing oxygen-free copper | Takuro Iwamura, Tsugio Koya, Hideru Hagiwara, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1991-08-06 |
| 4981514 | Method for manufacturing copper-base alloy | Haruhiko Asao, Hiroshi Kohno, Yukio Sugawara, Keiji Nogami | 1991-01-01 |