Inventor · disambiguated record
Ayato Oikawa
Also filed as: OIKAWA AYATO
2 granted patents·1 pending application·31 citations·filing 2017–2019
54Inventor score
Files withNIPPON PISTON RING CO LTD3
Top patents by PatentIndex Score
3 records- 0192US10605374B2Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valveNIPPON PISTON RING CO LTD·Filed 2017·Granted Mar 31, 2020·31 cites·11 claims
- 0255US11549408B2Iron-based sintered alloy valve seat for internal combustion engineNIPPON PISTON RING CO LTD·Filed 2019·Granted Jan 10, 2023·0 cites·10 claims
- 0345US2020284173A1Sintered ferrous alloy valve seat exhibiting excellent thermal conductivity for use in internal combustion engineNIPPON PISTON RING CO LTD·Filed 2018·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →