Inventor · disambiguated record
Takashi Akamatsu
Also filed as: AKAMATSU TAKASHI
4 granted patents·21 citations·filing 1966–1975
73Inventor score
Files withSUMITOMO CHEMICAL CO4
Top patents by PatentIndex Score
4 records- 0169US4077971ATetrahydrophthalimide methyl-2-phenylbenzatriazolesSUMITOMO CHEMICAL CO·Filed 1975·Granted Mar 7, 1978·9 cites·10 claims
- 0258US4055565AOptical brightening agents of naphthalimide derivativesSUMITOMO CHEMICAL CO·Filed 1973·Granted Oct 25, 1977·5 cites·7 claims
- 0337US4041051AAnthraquinone disperse dyestuffsSUMITOMO CHEMICAL CO·Filed 1966·Granted Aug 9, 1977·2 cites·2 claims
- 0434US3947471ABenz (c) fluoran compounds and recording sheet containing themSUMITOMO CHEMICAL CO·Filed 1974·Granted Mar 30, 1976·5 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →