Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5114468 | Cu-base sintered alloy | Tohru Kohno, Masato Otsuki | 1992-05-19 |
| 4995924 | Synchronizer ring in speed variator made of copper-base alloy | — | 1991-02-26 |
| 4943321 | Synchronizer ring in speed variator made of iron-base sintered alloy | — | 1990-07-24 |
| 4874439 | Synchronizer ring in speed variator made of wear-resistant copper alloy having high strength and toughness | — | 1989-10-17 |
| 4872048 | Semiconductor device having copper alloy leads | Takuro Iwamura, Masao Kobayashi | 1989-10-03 |
| 4749548 | Copper alloy lead material for use in semiconductor device | Takuro Iwamura, Masao Kobayashi | 1988-06-07 |