Inventor · disambiguated record
Shigetaka Numazawa
Also filed as: NUMAZAWA SHIGETAKA
6 granted patents·2 pending applications·16 citations·filing 2010–2019
71Inventor score
Top patents by PatentIndex Score
8 records- 0190US9123897B2Benzotriazole derivatives and organic electroluminescent devices using the derivativesHODOGAYA CHEMICAL CO LTD·Filed 2012·Granted Sep 1, 2015·15 cites·12 claims
- 0273US9985216B2Indenoindole derivative and organic electroluminescent elementHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted May 29, 2018·1 cites·6 claims
- 0362US10738019B2Compound including basic dye and amino acid, hair dyeing dye, and hair dyeing compositionHODOGAYA CHEMICAL CO LTD·Filed 2019·Granted Aug 11, 2020·0 cites·12 claims
- 0443US9842999B2Benzotriazole derivative and an organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Dec 12, 2017·0 cites·11 claims
- 0542US9871210B2Naphthotriazole derivatives and organic electroluminescence devicesHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Jan 16, 2018·0 cites·13 claims
- 0631US8722288B2Diphenylnaphthylamine derivativesNUMAZAWA SHIGETAKA·Filed 2010·Granted May 13, 2014·0 cites·4 claims
- 0726US2013071780A1Triphenylamine derivativesNUMAZAWA SHIGETAKA·Filed 2011·Application pending·0 cites
- 0826US2012052427A1Indole derivativesNUMAZAWA SHIGETAKA·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →