Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972131 | Ag-Cu alloy for a sliding contact | Takao Asada, Keiji Nakamura, Isao Shibuya, Toshiya Yamamoto, Tetsuya Nakamura | 1999-10-26 |
| 5037496 | Cobalt-containing precious metal material for decoration | — | 1991-08-06 |