RK

Ryouhei Koyama

AC Asahi Kasei Kogyo Co.: 2 patents #303 of 1,395Top 25%
📍 Hyuga, JP: #9 of 36 inventorsTop 25%
Overall (All Time): #2,342,171 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4673808 Disc for rotary encoder and method for producing same Takashi Katohno 1987-06-16
4658162 Printed coil unit for small size actuator Yoshinobu Haruta 1987-04-14