Inventor · disambiguated record

Keiji Sumiya

Also filed as: SUMIYA KEIJI

18 granted patents·9 pending applications·188 citations·filing 19892014

94Inventor score
Technology areasH10WC09KY10TC09JG01T
Files withHITACHI CHEMICAL CO LTD16INADA TEIICHI6HAMAMATSU PHOTONICS KK1KURASHIGE KAZUHISA1SUMIYA KEIJI1

Top patents by PatentIndex Score

27 records

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