RY

Ryoji Yamamoto

HP Hitachi Metals Precision: 1 patents #1 of 3Top 35%
NE Nec: 1 patents #128 of 619Top 25%
📍 Adachi, JP: #5 of 12 inventorsTop 45%
Overall (1989): #59,700 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4832908 Low thermal expansion cast alloy Katsuhisa Ishikawa, Takayuki TSUKAHARA 1989-05-23