Inventor · disambiguated record
Yoichi Usui
Also filed as: USUI YOICHI
5 granted patents·20 citations·filing 2003–2018
73Inventor score
Files withHOYA CORP5
Top patents by PatentIndex Score
5 records- 0192US9746762B2Conductive film coated substrate, multilayer reflective film coated substrate, reflective mask blank, reflective mask, and semiconductor device manufacturing methodHOYA CORP·Filed 2014·Granted Aug 29, 2017·8 cites·11 claims
- 0273US7348105B2Reflective maskblanksHOYA CORP·Filed 2003·Granted Mar 25, 2008·12 cites·19 claims
- 0372US10527927B2Conductive film coated substrate, multilayer reflective film coated substrate, reflective mask blank, reflective mask, and semiconductor device manufacturing methodHOYA CORP·Filed 2018·Granted Jan 7, 2020·0 cites·11 claims
- 0459US10209614B2Conductive film coated substrate, multilayer reflective film coated substrate, reflective mask blank, reflective mask, and semiconductor device manufacturing methodHOYA CORP·Filed 2017·Granted Feb 19, 2019·0 cites·11 claims
- 0553US7722998B2Reflective mask blankHOYA CORP·Filed 2008·Granted May 25, 2010·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →