Inventor · disambiguated record
Shigeo Hirai
Also filed as: HIRAI SHIGEO
3 granted patents·1 pending application·44 citations·filing 1981–2005
71Inventor score
Top patents by PatentIndex Score
4 records- 0175US4390361AProcess for preparing ferromagnetic particles comprising metallic ironHITACHI MAXELL·Filed 1981·Granted Jun 28, 1983·28 cites·12 claims
- 0250US4400337AMethod for production of metal magnetic particlesHITACHI MAXELL·Filed 1982·Granted Aug 23, 1983·9 cites·10 claims
- 0344US4456475AProcess for preparing ferromagnetic particles comprising metallic ironHITACHI MAXELL·Filed 1983·Granted Jun 26, 1984·7 cites·6 claims
- 0428US2007161500A1Method of regenerating hydrogenation catalyst and diolefin purification plantJSR CORP·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →