YY

Yoshiro Yamawaki

HZ Hitachi Zosen: 2 patents #121 of 531Top 25%
📍 Kamijima, JP: #6 of 23 inventorsTop 30%
Overall (All Time): #2,342,371 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4660491 Double hull ship without reinforcing transverse members between the inner and outer hull platings Seiichiro Murata, Masaru Tateishi, Toshio Yoshioka, Sakito Kamei, Hiroshi Nakazono 1987-04-28
4548154 Double hulled ship with longitudinal reinforcements Seiichiro Murata, Toshio Yoshioka, Sakito Kamei, Yoshitada Hiramatsu, Shin Takeuchi 1985-10-22