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Yoshito Yamakawa

HZ Hitachi Zosen: 5 patents #33 of 531Top 7%
Overall (All Time): #973,765 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10787780 Flood prevention device Yuichiro Kimura, Kunie Miyamoto, Toshiaki Morii, Kyoichi Nakayasu 2020-09-29
10697144 Rotation bearing of flap gate and flap gate Yuichiro Kimura, Kunie Miyamoto, Toshiaki Morii, Kyoichi Nakayasu 2020-06-30
9926682 Door structure for floating flap gate Hiroaki Arai, Hideyuki Niizato, Koji Kitamura, Jun Okada, Satoshi Ashida +1 more 2018-03-27
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