HA

Hiroaki Arai

HZ Hitachi Zosen: 2 patents #3 of 47Top 7%
Overall (2021): #157,285 of 548,734Top 30%
2
Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11143621 Eddy current flaw detection device Akihiro Shin, Takaaki Yamada, Hiroshi Azuma 2021-10-12
10923241 Concrete cask Keisuke Okada, Masanori Goto 2021-02-16