RI

Ryooji Ishida

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
Overall (All Time): #2,177,460 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6857555 Method and apparatus for friction stir welding Kazushige Fukuyori, Norihisa Okada 2005-02-22
6719184 Nondestructive inspection method Masakuni Ezumi, Tsuyoshi Fujii, Masami Ogata 2004-04-13