Inventor · disambiguated record
Ippo Hirai
Also filed as: HIRAI IPPO
3 granted patents·198 citations·filing 1988–1992
78Inventor score
Files withTDK CORP3
Top patents by PatentIndex Score
3 records- 0190US5252148ASoft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the sameTDK CORP·Filed 1992·Granted Oct 12, 1993·79 cites·7 claims
- 0289US4923533AMagnetic shield-forming magnetically soft powder, composition thereof, and process of makingTDK CORP·Filed 1988·Granted May 8, 1990·75 cites·35 claims
- 0386US5207841ASoft magnetic powder and magnetic shield compositionTDK CORP·Filed 1991·Granted May 4, 1993·44 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →