YH

Yoshihiko Hoshikawa

DC Dowa Mining Co.: 1 patents #157 of 324Top 50%
Overall (All Time): #3,581,112 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6228144 Method for operating waste heat boiler in flash-smelting furnace Tsuneo Shirasawa, Izumi Kawaguchi, Koji Yamada 2001-05-08