Inventor · disambiguated record
Kei Sakata
Also filed as: SAKATA KEI
37 granted patents·7 pending applications·537 citations·filing 1984–2012
98Inventor score
Files withKAWASAKI STEEL CO20JFE STEEL CORP13JFE STEEL CORP A CORP OF JAPAN3KENMOCHI KAZUHITO2DUPLO SEIZO KK1
Top patents by PatentIndex Score
44 records- 0197US6423426B1High tensile hot-dip zinc-coated steel plate excellent in ductility and method for production thereofKAWASAKI STEEL CO·Filed 2000·Granted Jul 23, 2002·53 cites·6 claims
- 0296US6676774B2Hot rolled steel plate and cold rolled steel plate being excellent in strain aging hardening characteristicsJFE STEEL CORP·Filed 2001·Granted Jan 13, 2004·46 cites·11 claims
- 0394US6814819B2Methods of manufacturing hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening propertyJFE STEEL CORP·Filed 2003·Granted Nov 9, 2004·25 cites·15 claims
- 0493US7396420B2Hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening propertyJFE STEEL CORP·Filed 2003·Granted Jul 8, 2008·24 cites·4 claims
- 0593US6537394B1Method for producing hot-dip galvanized steel sheet having high strength and also being excellent in formability and galvanizing propertyKAWASAKI STEEL CO·Filed 2000·Granted Mar 25, 2003·39 cites·4 claims
- 0691US9862014B2Method for electric resistance welded steel tubeJFE STEEL CORP·Filed 2012·Granted Jan 9, 2018·5 cites·4 claims
- 0791US6818074B2High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the sameJFE STEEL CORP·Filed 2002·Granted Nov 16, 2004·34 cites·12 claims
- 0889US5582658AHigh strength steel sheet adapted for press forming and method of producing the sameKAWASAKI STEEL CO·Filed 1995·Granted Dec 10, 1996·37 cites·15 claims
- 0987US7527700B2High strength hot rolled steel sheet and method for manufacturing the sameJFE STEEL CORP·Filed 2004·Granted May 5, 2009·21 cites·4 claims
- 1086US6692584B2High tensile cold-rolled steel sheet excellent in ductility and in strain aging hardening properties, and method for producing the sameJFE STEEL CORP·Filed 2001·Granted Feb 17, 2004·17 cites·5 claims
- 1180US5360493AHigh-strength cold-rolled steel sheet excelling in deep drawability and method of producing the sameKAWASAKI STEEL CO·Filed 1993·Granted Nov 1, 1994·22 cites·20 claims
- 1278US7887649B2High-tensile strength welded steel tube for structural parts of automobiles and method of producing the sameJFE STEEL CORP·Filed 2007·Granted Feb 15, 2011·3 cites·6 claims
- 1377US6638371B1Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the sameKAWASAKI STEEL CO·Filed 2003·Granted Oct 28, 2003·14 cites·14 claims
- 1477US6210496B1High-strength high-workability cold rolled steel sheet having excellent impact resistanceKAWASAKI STEEL CO·Filed 1998·Granted Apr 3, 2001·29 cites·6 claims
- 1573US6410163B1High strength thin steel sheet, high strength alloyed hot-dip zinc-coated steel sheet, and method for producing themKAWASAKI STEEL CO·Filed 1999·Granted Jun 25, 2002·36 cites·21 claims
- 1671US7347902B2High tensile hot rolled steel sheet excellent in shape freezing property and endurance fatigue characteristics after formingJFE STEEL CORP·Filed 2002·Granted Mar 25, 2008·7 cites·2 claims
- 1769US5853503AHot rolled steel sheets and method of producing the sameKAWASAKI STEEL CO·Filed 1996·Granted Dec 29, 1998·11 cites·6 claims
- 1868US8152152B2Apparatus and method for sealing paper with pasteSAKATA KEI·Filed 2009·Granted Apr 10, 2012·5 cites·7 claims
- 1965US7252724B2High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the sameJFE STEEL CORP·Filed 2003·Granted Aug 7, 2007·5 cites·2 claims
- 2063US4586965AProduction of a base steel sheet to be surface-treated which is to produce no stretcher strainKAWASAKI STEEL CO·Filed 1985·Granted May 6, 1986·10 cites·1 claims
- 2160US5356494AHigh strength cold rolled steel sheet having excellent non-aging property at room temperature and suitable for drawing and method of producing the sameKAWASAKI STEEL CO·Filed 1992·Granted Oct 18, 1994·11 cites·10 claims
- 2259US5542994AMethod for manufacturing a high-formable, high-strength cold-rolled steel sheet excellent in resistance to secondary working embrittlementKAWASAKI STEEL CO·Filed 1994·Granted Aug 6, 1996·10 cites·2 claims
- 2359US4857117AMethod of manufacturing a cold-rolled steel sheet having a good deep drawabilityKAWASAKI STEEL CO·Filed 1988·Granted Aug 15, 1989·9 cites·2 claims
- 2459US2009202384A1High tensile strength hot-rolled steel sheet having superior strain aging hardenability and method for producing the sameJFE STEEL CORP A CORP OF JAPAN·Filed 2009·Application pending·0 cites
- 2558US5290370ACold-rolled high-tension steel sheet having superior deep drawability and method thereofKAWASAKI STEEL CO·Filed 1992·Granted Mar 1, 1994·13 cites·4 claims
- 2657US2010047609A1Electric resistance welded steel tube for heat treatment and method for manufacturing the sameJFE STEEL CORP·Filed 2008·Application pending·0 cites
- 2755US8747578B2Steel for structural part of automobile and method for producing the sameTOYODA SHUNSUKE·Filed 2004·Granted Jun 10, 2014·4 cites·6 claims
- 2855US7485194B2High tensile hot-rolled steel sheet excellent in resistance to scuff on mold and in fatigue characteristicsJFE STEEL CORP·Filed 2002·Granted Feb 3, 2009·3 cites·2 claims
- 2951US2005019601A1High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the sameJFE STEEL CORP A CORP OF JAPAN·Filed 2004·Application pending·0 cites
- 3051US2005016644A1High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the sameJFE STEEL CORP A CORP OF JAPAN·Filed 2004·Application pending·0 cites
- 3150US5846343ACold rolled steel sheet exhibiting excellent press workability and method of manufacturing the sameKAWASAKI STEEL CO·Filed 1996·Granted Dec 8, 1998·10 cites·4 claims
- 3247US4588181ADouble-feed prevention device in paper feeding apparatusDUPLO SEIZO KK·Filed 1984·Granted May 13, 1986·9 cites·9 claims
- 3346US7942984B2Steel pipe with good magnetic properties and method of producing the sameJFE STEEL CORP·Filed 2005·Granted May 17, 2011·0 cites·6 claims
- 3446US5460665AMethod of manufacturing a low-alloy ultra-low-carbon cold anisotropy rolled steel sheet exhibiting an excellent resistance to fabrication embrittlement and small internal anisotropyKAWASAKI STEEL CO·Filed 1994·Granted Oct 24, 1995·6 cites·3 claims
- 3544US8912462B2Method of manufacturing electric resistance welding pipes having excellent characterization of welded seamsKENMOCHI KAZUHITO·Filed 2006·Granted Dec 16, 2014·0 cites·19 claims
- 3644US5180449AGalvanized high-strength steel sheet having low yield ratio and method of producing the sameKAWASAKI STEEL CO·Filed 1992·Granted Jan 19, 1993·6 cites·4 claims
- 3741US4931106AHot rolled steel sheet having high resistances against secondary-work embrittlement and brazing embrittlement and adapted for ultra-deep drawing and a method for producing the sameKAWASAKI STEEL CO·Filed 1988·Granted Jun 5, 1990·4 cites·3 claims
- 3840US2006218985A1Tube with high dimensional accuracy, and method and device for manufacturing the tubeKENMOCHI KAZUHITO·Filed 2004·Application pending·0 cites
- 3939US2003041932A1High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the sameFiled 2001·Application pending·0 cites
- 4037US6217680B1Thick cold rolled steel sheet excellent in deep drawability and method of manufacturing the sameKAWASAKI STEEL CO·Filed 1998·Granted Apr 17, 2001·3 cites·12 claims
- 4136US2003129444A1Composite structure type high tensile strength steel plate, plated plate of composite structure type high tensile strength steel and method for their productionFiled 2001·Application pending·0 cites
- 4235US8512487B2Seamless expandable oil country tubular goods and manufacturing method thereofYAMAZAKI YOSHIO·Filed 2004·Granted Aug 20, 2013·0 cites·6 claims
- 4333US6103394AThin steel sheet having excellent rectangular drawability and production method thereofKAWASAKI STEEL CO·Filed 1997·Granted Aug 15, 2000·2 cites·14 claims
- 4433US5882803AHigh-strength hot dip galvannealed steel sheets having excellent plating properties and method of producing the sameKAWASAKI STEEL CO·Filed 1995·Granted Mar 16, 1999·4 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →