Inventor · disambiguated record
Kiyomi Sumida
Also filed as: SUMIDA KIYOMI
2 granted patents·60 citations·filing 1984–1987
65Inventor score
Files withMAZDA MOTOR2
Top patents by PatentIndex Score
2 records- 0178US4848212AInternal combustion engine piston with two compression rings having reduced oil consumptionMAZDA MOTOR·Filed 1987·Granted Jul 18, 1989·44 cites·15 claims
- 0256US4656711AMethod for determining piston form for an internal combustion engineMAZDA MOTOR·Filed 1984·Granted Apr 14, 1987·16 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →