Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7524356 | Method for manufacturing low-oxygen copper | Haruhiko Asao, Yutaka Koshiba, Tutomu Masui, Kazumasa Hori, Kenji Wakiguchi +2 more | 2009-04-28 |
| 6944930 | Method for manufacturing low-oxygen copper | Haruhiko Asao, Yutaka Koshiba, Tutomu Masui, Kazumasa Hori, Kenji Wakiguchi +2 more | 2005-09-20 |
| 6640876 | Method and apparatus for manufacturing copper and/or copper alloy ingot having no shrinkage cavity and having smooth surface without wrinkles | Kenji Yajima, Norikazu Ishida, Yutaka Koshiba, Akihiro Kakimoto | 2003-11-04 |
| 6589473 | Apparatus for manufacturing low-oxygen copper | Haruhiko Asao, Yutaka Koshiba, Tutomu Masui, Kazumasa Hori, Kenji Wakiguchi +2 more | 2003-07-08 |
| 5062614 | Apparatus and method for manufacturing copper-base alloy | Izumi Sukekawa, Haruhiko Asao, Hiroshi Kohno, Yukio Sugawara | 1991-11-05 |
| 4981514 | Method for manufacturing copper-base alloy | Izumi Sukekawa, Haruhiko Asao, Hiroshi Kohno, Yukio Sugawara | 1991-01-01 |