YS

Yoshio Sohama

MC Mitsui Mining & Smelting Co.: 1 patents #28 of 72Top 40%
Overall (2003): #85,673 of 273,478Top 35%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6641641 Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein Hiromichi Isaka, Hiroyuki Watanabe 2003-11-04