Inventor · disambiguated record

Sumiyoshi Nagai

Also filed as: NAGAI SUMIYOSHI

2 granted patents·136 citations·filing 1979–1980

70Inventor score

Technology areasA61K

Files withSANSHO PHARMA2

Top patents by PatentIndex Score

2 records

0187US4369174ACosmetic composition containing kojic acid esterSANSHO PHARMA·Filed 1980·Granted Jan 18, 1983·103 cites·1 claims
0276US4278656ACosmetic composition containing kojic acid esterSANSHO PHARMA·Filed 1979·Granted Jul 14, 1981·33 cites·3 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →