Inventor · disambiguated record
Sumika Akiyama
Also filed as: AKIYAMA SUMIKA
2 granted patents·6 citations·filing 2018–2020
47Inventor score
Files withTOPPAN PRINTING CO LTD2
Top patents by PatentIndex Score
2 records- 0191US10767266B2Vapor deposition mask base material, vapor deposition mask base material manufacturing method, and vapor deposition mask manufacturing methodTOPPAN PRINTING CO LTD·Filed 2018·Granted Sep 8, 2020·6 cites·6 claims
- 0265US11390953B2Vapor deposition mask base material, vapor deposition mask base material manufacturing method, and vapor deposition mask manufacturing methodTOPPAN PRINTING CO LTD·Filed 2020·Granted Jul 19, 2022·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →