Inventor
OHGAMI TAKASHI
JP4 patents
Patents
4 patentsUS6533838B1Mar 18, 2003
High purity gallium for preparation of compound semiconductor, and method and apparatus for purifying the same
DOWA MINING CO14 citations78
US6444164B2Sep 3, 2002
Apparatus for producing high-purity silver materials
DOWA MINING CO6 citations71
US6231637B1May 15, 2001
Process for producing high-purity silver materials
DOWA MINING CO11 citations71
US6627149B1Sep 30, 2003
High-purity silver wires for use in recording, acoustic or image transmission applications
DOWA MINING CO2 citations60