YM

Yoshiro Matsumoto

SI Sumitomo Metal Industries: 1 patents #3 of 57Top 6%
Overall (1982): #21,994 of 81,411Top 30%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4344801 Heavy thick high-strength casting having improved weldability and impact properties Tatsuro Kunitake, Hiroo Ohtani, Seiichi Watanabe, Toshiji Takigawa 1982-08-17