Inventor · disambiguated record

Hajime Hirai

Also filed as: HIRAI HAJIME · OHNO NOBUO

3 granted patents·13 citations·filing 1974–1978

64Inventor score

Technology areasC07C

Files withSUMITOMO CHEMICAL CO3

Top patents by PatentIndex Score

3 records

0159US4245116ARacemization of optically active 2-(4-chlorophenyl)-3-methylbutyric acidSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 13, 1981·6 cites·9 claims
0257US3947519APreparation of optically active allethrorone via allethronyl acid phthalateSUMITOMO CHEMICAL CO·Filed 1974·Granted Mar 30, 1976·5 cites·9 claims
0341US4162269APurification process for 3-phenoxybenzaldehydeSUMITOMO CHEMICAL CO·Filed 1977·Granted Jul 24, 1979·2 cites·3 claims

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