YK

Yoichi Katsuyama

HC Hitachi Construction Machinery Co.: 1 patents #701 of 1,234Top 60%
📍 Tomamae, JP: #3 of 4 inventorsTop 75%
Overall (All Time): #3,897,031 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4904954 Ultrasonic signal amplifier circuit and system of gain control thereof Kan Otake, Junichi Kajiwara, Yoshio Akutsu, Katsuyoshi MIYAJI 1990-02-27