KO

Koichi Oka

SC Sumitomo Metal Mining Co.: 1 patents #4 of 15Top 30%
Overall (1989): #86,035 of 140,708Top 65%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4865660 Rare-earth element/cobalt type magnet powder for resin magnets Tatsuo Nate, Takehiko Satoh 1989-09-12