Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12305269 | Method of manufacturing sheet material made of copper-silver alloy and method of manufaturing sheet for electrode of probe card | Tsutomu Koizumi, Ryuichi Arai | 2025-05-20 |
| 12148545 | Conductive wire for electrical properties testing and method for producing the same | Yoshihiro Sakagami, Rikuya WATANABE, Tsutomu Koizumi, Ryuichi Arai | 2024-11-19 |