Inventor · disambiguated record
Katsutoshi Numano
Also filed as: NUMANO KATSUTOSHI
2 granted patents·3 citations·filing 1993–1993
44Inventor score
Technology areasC09B
Top patents by PatentIndex Score
2 records- 0140US5416263AProcess for producing 4,4'-Diamino-1,1'-dianthraquinonyl pigmentsSUMITOMO CHEMICAL CO·Filed 1993·Granted May 16, 1995·2 cites·12 claims
- 0227US5393899AProcess for purification of crude 4,4'-diamino-1,1'-dianthraquinonyl-3,3'-disulfonic acids and salts thereofSUMIMOTO CHEMICAL COMPANY LIMI·Filed 1993·Granted Feb 28, 1995·1 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →