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Yoshito Yamakawa

HZ Hitachi Zosen: 2 patents #6 of 60Top 10%
Overall (2016): #83,608 of 481,213Top 20%
2
Patents 2016

Issued Patents 2016

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9528239 Floating flap gate Kyouichi Nakayasu, Toshiaki Morii, Masaki Inui, Yuuichirou Kimura 2016-12-27
9267322 Flap gate-type waterproof panel for wall installation Masaki Inui, Yuuichirou Kimura, Kyouichi Nakayasu, Toshiaki Morii 2016-02-23