Inventor · disambiguated record
Hiroshi Ookuma
Also filed as: OOKUMA HIROSHI
4 granted patents·2 pending applications·3 citations·filing 2012–2019
59Inventor score
Top patents by PatentIndex Score
6 records- 0162US9564600B2Compound having an indolocarbazole ring structure and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Feb 7, 2017·1 cites·3 claims
- 0259US11741839B2Traffic safety assistance device, mobile information terminal, and programQUON TECH LTD·Filed 2019·Granted Aug 29, 2023·2 cites·20 claims
- 0344US2015034924A1Novel triphenylene derivatives and organic electroluminescent devices using said derivativesHODOGAYA CHEMICAL CO LTD·Filed 2012·Application pending·0 cites
- 0441US9553272B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Jan 24, 2017·0 cites·15 claims
- 0535US10916711B2Spiro compound having azafluorene ring structure, light-emitting material, and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2015·Granted Feb 9, 2021·0 cites·11 claims
- 0635US2018175301A1Arylamine compound and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →