Inventor · disambiguated record
Hirofumi Ohtsubo
Also filed as: OHTSUBO HIROFUMI
3 granted patents·1 pending application·4 citations·filing 2015–2021
55Inventor score
Files withJFE STEEL CORP4
Top patents by PatentIndex Score
4 records- 0186US11692252B2Duplex stainless clad steel plate and method of producing sameJFE STEEL CORP·Filed 2019·Granted Jul 4, 2023·2 cites·2 claims
- 0267US10351926B2High toughness and high tensile strength thick steel plate with excellent material homogeneity and production method for sameJFE STEEL CORP·Filed 2015·Granted Jul 16, 2019·2 cites·10 claims
- 0356US2023279517A1Rail having excellent fatigue crack propagation resistance characteristics, and method of producing sameJFE STEEL CORP·Filed 2021·Application pending·0 cites
- 0451US11891675B2Duplex stainless clad steel plate and method of producing sameJFE STEEL CORP·Filed 2019·Granted Feb 6, 2024·0 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Hirofumi Ohtsubo 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 →