Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6397681 | Portable ultrasonic detector | Hajime Mizunoya, Shigenori Aoki, Shigeru Miwa | 2002-06-04 |
| 4904954 | Ultrasonic signal amplifier circuit and system of gain control thereof | Kan Otake, Junichi Kajiwara, Katsuyoshi MIYAJI, Yoichi Katsuyama | 1990-02-27 |