Inventor · disambiguated record
Kosei Yamaguchi
Also filed as: YAMAGUCHI KOSEI
6 granted patents·28 citations·filing 2009–2016
76Inventor score
Top patents by PatentIndex Score
6 records- 0178US9097356B2Check valveYAMAGUCHI KOSEI·Filed 2012·Granted Aug 4, 2015·8 cites·12 claims
- 0277US8561638B2Check valveYAMAGUCHI KOSEI·Filed 2009·Granted Oct 22, 2013·13 cites·9 claims
- 0369US8316881B2Fuel tank check valveYAMAGUCHI KOSEI·Filed 2009·Granted Nov 27, 2012·7 cites·7 claims
- 0439US10221955B2Valve devicePIOLAX INC·Filed 2016·Granted Mar 5, 2019·0 cites·18 claims
- 0537US10295074B2Check valvePIOLAX INC·Filed 2016·Granted May 21, 2019·0 cites·11 claims
- 0635US9784377B2Check valvePIOLAX INC·Filed 2015·Granted Oct 10, 2017·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →