Inventor · disambiguated record
Youichi Umada
Also filed as: UMADA YOUICHI
4 granted patents·96 citations·filing 1986–1988
79Inventor score
Top patents by PatentIndex Score
4 records- 0184US4986989AZeolite fungicideSUMITOMO CHEMICAL CO·Filed 1988·Granted Jan 22, 1991·41 cites·4 claims
- 0283US4709024AProduction of epsilon-caprolactamSUMITOMO CHEMICAL CO·Filed 1986·Granted Nov 24, 1987·19 cites·14 claims
- 0382US4810794AProcess for producing pyridine basesKOEI CHEMICAL CO·Filed 1987·Granted Mar 7, 1989·21 cites·20 claims
- 0479US4717769AProduction of epsilon-caprolactamSUMITOMO CHEMICAL CO·Filed 1987·Granted Jan 5, 1988·15 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →