Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5705125 | Wire for electric railways | Motoo Goto, Shizuo Kawakita, Yoshiharu Mae, Yutaka Koshiba, Kenji Yajima +5 more | 1998-01-06 |
| 5391243 | Method for producing wire for electric railways | Motoo Goto, Shizuo Kawakita, Yoshiharu Mae, Yutaka Koshiba, Kenji Yajima +5 more | 1995-02-21 |
| 5143355 | Apparatus for manufacturing oxygen-free copper | Tsugio Koya, Izumi Sukekawa, Hideru Hagiwara, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1992-09-01 |
| 5037471 | Method for manufacturing oxygen-free copper | Tsugio Koya, Izumi Sukekawa, Hideru Hagiwara, Haruhiko Asao, Toshiaki Shigematsu +1 more | 1991-08-06 |
| 4901550 | Manufacturing method of extra fine wire | Masato Koide, Tsugio Koya | 1990-02-20 |
| 4886641 | Electrical contact spring material made of copper base alloy of high strength and toughness with reduced anisotropy in characteristics | Masao Kobayashi | 1989-12-12 |
| 4872048 | Semiconductor device having copper alloy leads | Hidetoshi Akutsu, Masao Kobayashi | 1989-10-03 |
| 4830086 | Mold member and rapidly solidifying water cooled rotary roll member | Masao Kobayashi, Kazuhiko Tabei | 1989-05-16 |
| 4749548 | Copper alloy lead material for use in semiconductor device | Hidetoshi Akutsu, Masao Kobayashi | 1988-06-07 |