KO

Kohki Ohtsuka

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #4,004,086 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4619713 Method of producing nodular graphite cast iron Makoto Suenaga, Mitsuru Yano, Yasuoki Ishihara 1986-10-28