Inventor · disambiguated record
Yoshito Yamakawa
Also filed as: YAMAKAWA YOSHITO
5 granted patents·1 pending application·10 citations·filing 2012–2017
70Inventor score
Files withHITACHI SHIPBUILDING ENG CO2ARAI HIROAKI1HITACHI ZOSEN CORP1INUI MASAKI1NAKAYASU KYOUICHI1
Top patents by PatentIndex Score
6 records- 0168US10697144B2Rotation bearing of flap gate and flap gateHITACHI SHIPBUILDING ENG CO·Filed 2017·Granted Jun 30, 2020·2 cites·11 claims
- 0261US9267322B2Flap gate-type waterproof panel for wall installationINUI MASAKI·Filed 2012·Granted Feb 23, 2016·5 cites·5 claims
- 0355US9528239B2Floating flap gateNAKAYASU KYOUICHI·Filed 2012·Granted Dec 27, 2016·3 cites·2 claims
- 0443US9926682B2Door structure for floating flap gateARAI HIROAKI·Filed 2012·Granted Mar 27, 2018·0 cites·4 claims
- 0541US10787780B2Flood prevention deviceHITACHI SHIPBUILDING ENG CO·Filed 2017·Granted Sep 29, 2020·0 cites·4 claims
- 0632US2021172138A1Floating flap gate apparatusHITACHI ZOSEN CORP·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →