Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303904 | Weld material, gas metal arc welding method, and welded structure | Kiyotaka Iwatsubo, Toshimitsu Tetsui, Takayuki Kawano, Youzaburo Mabuchi, Hiroshi Tsurusaki +3 more | 2001-10-16 |
| 5517550 | ISDN switching apparatus | — | 1996-05-14 |
| 5371779 | Call initiating system for mobile telephone units | — | 1994-12-06 |
| 4676425 | Steel tube working apparatus | Hiroshi Fujimura, Shozo Kaneko, Atsumasa Iwanaga, Joji Ichinari | 1987-06-30 |