Inventor · disambiguated record
Katsuyuki Hirai
Also filed as: HIRAI KATSUYUKI
3 granted patents·41 citations·filing 1989–2015
67Inventor score
Top patents by PatentIndex Score
3 records- 0166US5196716AMethod and apparatus for measuring internal defects for position and depthMITSUI MINING & SMELTING CO·Filed 1991·Granted Mar 23, 1993·30 cites·16 claims
- 0245US5077475AMethod for quantitative evaluation method of optical absorption image for determination of resistivity dispersionMITSUI MINING & SMELTING CO·Filed 1989·Granted Dec 31, 1991·11 cites·2 claims
- 0327US11179333B2Emulsion compositionFUJI CHEM IND CO LTD·Filed 2015·Granted Nov 23, 2021·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →