Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307518 | Double-balanced mixer | Youji Maeda, Yoshikuni Higashikawa, Akimasa Matsushima | 1994-04-26 |
| 5140706 | Transmission-line transformer device for double-balanced miner | Youji Maeda, Yoshikuni Higashikawa, Akimasa Matsushima | 1992-08-18 |