Inventor · disambiguated record
Seizi Sumikawa
Also filed as: SUMIKAWA SEIZI
2 granted patents·46 citations·filing 1979–1980
63Inventor score
Technology areasB60H
Files withDIESEL KIKI CO2
Top patents by PatentIndex Score
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →