Inventor · disambiguated record
Hiroyasu Niitsuma
Also filed as: NIITSUMA HIROYASU
3 granted patents·1 pending application·3 citations·filing 2013–2022
51Inventor score
Technology areasB22D
Files withSHINAGAWA REFRACTORIES CO4
Top patents by PatentIndex Score
4 records- 0182US9573189B2Submerged nozzle for continuous casting apparatusSHINAGAWA REFRACTORIES CO·Filed 2013·Granted Feb 21, 2017·3 cites·8 claims
- 0254US11806781B2Submerged entry nozzleSHINAGAWA REFRACTORIES CO·Filed 2020·Granted Nov 7, 2023·0 cites·3 claims
- 0346US11897027B2Immersion nozzle for continuous castingSHINAGAWA REFRACTORIES CO·Filed 2022·Granted Feb 13, 2024·0 cites·6 claims
- 0441US2024238869A1Immersion nozzleSHINAGAWA REFRACTORIES CO·Filed 2021·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hiroyasu Niitsuma files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →