Inventor · disambiguated record
Tatsuo Yokoi
Also filed as: YOKOI TATSUO
41 granted patents·11 pending applications·161 citations·filing 1996–2022
97Inventor score
Files withNIPPON STEEL CORP21NIPPON STEEL & SUMITOMO METAL CORP20YOKOI TATSUO8HONDA MOTOR CO LTD1SHUTO HIROSHI1
Top patents by PatentIndex Score
52 records- 0196US6589369B2High fatigue strength steel sheet excellent in burring workability and method for producing the sameNIPPON STEEL CORP·Filed 2000·Granted Jul 8, 2003·44 cites·21 claims
- 0293US11492679B2Hot-rolled steel sheet and method for manufacturing sameNIPPON STEEL CORP·Filed 2019·Granted Nov 8, 2022·4 cites·15 claims
- 0393US9797024B2Hot-rolled steel sheet for gas nitrocarburizing and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Oct 24, 2017·2 cites·6 claims
- 0492US9863026B2Dual phase steel sheet and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Jan 9, 2018·5 cites·12 claims
- 0590US10913988B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Feb 9, 2021·2 cites·10 claims
- 0690US10329637B2Heat-rolled steel plate for tailored rolled blank, tailored rolled blank, and methods for producing theseNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Jun 25, 2019·2 cites·24 claims
- 0789US10590506B2Hot-rolled steel sheet for tailored rolled blank and tailored rolled blankNIPPON STEEL & SUMITOMO METAL CORP·Filed 2019·Granted Mar 17, 2020·1 cites·4 claims
- 0889US10087499B2Hot-rolled steel sheet and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2012·Granted Oct 2, 2018·5 cites·12 claims
- 0986US11208702B2Hot-rolled steel sheet and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2019·Granted Dec 28, 2021·1 cites·3 claims
- 1086US10260124B2Hot-rolled steel sheet and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Apr 16, 2019·3 cites·9 claims
- 1185US9752217B2Hot-rolled steel sheet and method of producing the sameYOKOI TATSUO·Filed 2012·Granted Sep 5, 2017·3 cites·20 claims
- 1285US9512508B2High-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability and manufacturing method thereofSHUTO HIROSHI·Filed 2012·Granted Dec 6, 2016·5 cites·15 claims
- 1383US9453269B2Hot-rolled steel sheet for gas nitrocarburizing and manufacturing method thereofYOKOI TATSUO·Filed 2012·Granted Sep 27, 2016·2 cites·7 claims
- 1481US10196726B2High-strength hot-rolled steel sheet having excellent baking hardenability and low temperature toughness with maximum tensile strength of 980 MPa or moreNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Feb 5, 2019·2 cites·7 claims
- 1581US9062356B2High strength hot rolled steel plate for spiral line pipe superior in low temperature toughness and method of production of sameYOKOI TATSUO·Filed 2008·Granted Jun 23, 2015·4 cites·8 claims
- 1680US7749338B2High burring, high strength steel sheet excellent in softening resistance of weld heat affected zone and method of production of sameNIPPON STEEL CORP·Filed 2003·Granted Jul 6, 2010·16 cites·4 claims
- 1779US9657364B2High strength hot rolled steel sheet for line pipe use excellent in low temperature toughness and ductile fracture arrest performance and method of production of sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted May 23, 2017·1 cites·5 claims
- 1879US7381478B2Hot rolled steel sheet for processing and method for manufacturing the sameNIPPON STEEL CORP·Filed 2004·Granted Jun 3, 2008·22 cites·5 claims
- 1978US10689737B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Jun 23, 2020·1 cites·5 claims
- 2073US8562762B2High strength hot rolled steel products for line-pipes excellent in low temperature toughness and production method of the sameYOKOI TATSUO·Filed 2008·Granted Oct 22, 2013·2 cites·7 claims
- 2172US9200342B2Hot-rolled steel sheet and manufacturing method thereofYOKOI TATSUO·Filed 2011·Granted Dec 1, 2015·1 cites·5 claims
- 2271US10364478B2Bainite-containing-type high-strength hot-rolled steel sheet having excellent isotropic workability and manufacturing method thereofNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Jul 30, 2019·0 cites·4 claims
- 2370US5855696AUltra low carbon, cold rolled steel sheet and galvanized steel sheet having improved fatigue properties and processes for producing the sameNIPPON STEEL CORP·Filed 1996·Granted Jan 5, 1999·17 cites·18 claims
- 2470US2020157650A1Hot-rolled steel sheet for tailored rolled blank and tailored rolled blankNIPPON STEEL CORP·Filed 2020·Application pending·0 cites
- 2569US7662243B2Hot rolled steel sheetNIPPON STEEL CORP·Filed 2004·Granted Feb 16, 2010·9 cites·6 claims
- 2669US2025109467A1Hot-rolled steel sheetNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 2767US12448660B2Hot-rolled steel sheet and method for manufacturing sameNIPPON STEEL CORP·Filed 2021·Granted Oct 21, 2025·0 cites·20 claims
- 2866US9903023B2Hot rolled steel sheet and method for manufacturing the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Feb 27, 2018·2 cites·12 claims
- 2965US12442062B2Hot-rolled steel sheetNIPPON STEEL CORP·Filed 2022·Granted Oct 14, 2025·0 cites·9 claims
- 3062US2024141451A1Hot-stretch-reduced electric resistance welded pipeNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 3161US7503984B2High-strength thin steel sheet drawable and excellent in shape fixation property and method of producing the sameNIPPON STEEL CORP·Filed 2002·Granted Mar 17, 2009·5 cites·7 claims
- 3261US2011079328A1High strength hot rolled steel sheet for line pipe use excellent in low temperature toughness and ductile fracture arrest performance and method of production of sameYOKOI TATSUO·Filed 2009·Application pending·0 cites
- 3361US2023416886A1Hot-rolled steel sheetNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 3460US9587287B2Bainite-containing-type high-strength hot-rolled steel sheet having excellent isotropic workability and manufacturing method thereofYOKOI TATSUO·Filed 2012·Granted Mar 7, 2017·0 cites·6 claims
- 3559US12421567B2High-strength hot-rolled steel sheetNIPPON STEEL CORP·Filed 2021·Granted Sep 23, 2025·0 cites·6 claims
- 3656US12428694B2Hot-rolled steel sheet and method for manufacturing sameNIPPON STEEL CORP·Filed 2019·Granted Sep 30, 2025·0 cites·17 claims
- 3751US10900100B2Hot rolled steel sheetNIPPON STEEL CORP·Filed 2017·Granted Jan 26, 2021·0 cites·2 claims
- 3851US10894996B2Hot rolled steel sheetNIPPON STEEL CORP·Filed 2017·Granted Jan 19, 2021·0 cites·4 claims
- 3951US2011229282A1Gear machining apparatus and machining methodHONDA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 4050US11028458B2Steel sheet and plated steel sheetNIPPON STEEL CORP·Filed 2017·Granted Jun 8, 2021·0 cites·19 claims
- 4150US10752972B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Aug 25, 2020·0 cites·4 claims
- 4249US11401571B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Aug 2, 2022·0 cites·4 claims
- 4349US8157933B2High-strength hot rolled steel sheet being free from peeling and excellent in surface properties and burring properties, and method for manufacturing the sameYOKOI TATSUO·Filed 2008·Granted Apr 17, 2012·0 cites·8 claims
- 4448US10384256B2Tooling for punching steel sheet and punching methodNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Aug 20, 2019·0 cites·4 claims
- 4547US9896737B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Feb 20, 2018·0 cites·6 claims
- 4646US10226800B2Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Mar 12, 2019·0 cites·6 claims
- 4745US2020024679A1Hot rolled steel sheet, steel forged part and production method thereforNIPPON STEEL CORP·Filed 2017·Application pending·0 cites
- 4845US2021095363A1Hot rolled steel sheet, steel forged part and production method thereforNIPPON STEEL CORP·Filed 2017·Application pending·0 cites
- 4944US10689724B2Steel sheet with strain induced transformation type composite structure and method of manufacturing sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Jun 23, 2020·0 cites·9 claims
- 5041US2018023162A1Hot-rolled steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Application pending·0 cites
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →