Inventor · disambiguated record
Yoshiro Koyasu
Also filed as: KOYASU YOSHIRO
4 granted patents·50 citations·filing 1986–1994
76Inventor score
Files withNIPPON STEEL CORP4
Top patents by PatentIndex Score
4 records- 0174US5660648AMicroalloyed steel for hot forging free of subsequent quenching and tempering, process for producing hot forging, and a hot forgingNIPPON STEEL CORP·Filed 1994·Granted Aug 26, 1997·18 cites·9 claims
- 0257US5545267ASteel product for induction-hardened shaft component and shaft component using the sameNIPPON STEEL CORP·Filed 1994·Granted Aug 13, 1996·19 cites·12 claims
- 0356US5252153AProcess for producing steel bar wire rod for cold workingNIPPON STEEL CORP·Filed 1992·Granted Oct 12, 1993·10 cites·16 claims
- 0433US4806178ANon-heat refined steel bar having improved toughnessNIPPON STEEL CORP·Filed 1986·Granted Feb 21, 1989·3 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Yoshiro Koyasu 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 →