Inventor · disambiguated record
Kazuhisa Okai
Also filed as: OKAI KAZUHISA
10 granted patents·22 citations·filing 2004–2021
83Inventor score
Top patents by PatentIndex Score
10 records- 0174US8012599B2Surface-treated steel sheet with excellent corrosion resistance and method for manufacturing sameJFE STEEL CORP·Filed 2007·Granted Sep 6, 2011·2 cites·9 claims
- 0273US7875363B2Surface-treated steel sheetJFE STEEL CORP·Filed 2006·Granted Jan 25, 2011·3 cites·3 claims
- 0367US8304092B2Surface-treated galvanized steel sheet with superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming and aqueous surface-treatment liquid for galvanized steel sheetOKAI KAZUHISA·Filed 2007·Granted Nov 6, 2012·3 cites·6 claims
- 0464US11795526B2Surface-treated steel sheetJFE STEEL CORP·Filed 2019·Granted Oct 24, 2023·0 cites·6 claims
- 0563US7517591B2Highly corrosion-resistant surface-treated steel sheet and method for producing sameJFE STEEL CORP·Filed 2004·Granted Apr 14, 2009·5 cites·18 claims
- 0663US7348068B2Surface-treated steel sheet excellent in corrosion resistance, conductivity, and coating appearanceJFE STEEL CORP·Filed 2004·Granted Mar 25, 2008·6 cites·3 claims
- 0759US7842400B2Surface-treated steel sheet and method for manufacturing the sameJFE STEEL CORP·Filed 2004·Granted Nov 30, 2010·3 cites·16 claims
- 0855US11618938B2Steel sheet having a hot-dip Zn—Al—Mg-based coating film excellent in terms of surface appearance and method of manufacturing the sameJFE STEEL CORP·Filed 2018·Granted Apr 4, 2023·0 cites·8 claims
- 0947US11174556B2Surface-treatment solution for zinc or zinc alloy coated steel sheet, method of producing zinc or zinc alloy coated steel sheet with surface-coating layer, and zinc or zinc alloy coated steel sheet with surface-coating layerJFE STEEL CORP·Filed 2017·Granted Nov 16, 2021·0 cites·10 claims
- 1046US12378673B2Surface-treated steel sheet for organic resin coating and method of producing same, and organic resin coated steel sheet and method of producing sameJFE STEEL CORP·Filed 2021·Granted Aug 5, 2025·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →