Inventor · disambiguated record
Hak-Cheol Lee
Also filed as: LEE HAK-CHEOL
13 granted patents·11 pending applications·7 citations·filing 2010–2022
83Inventor score
Top patents by PatentIndex Score
24 records- 0187US11155905B2Enhanced wear resistant steel and methods of making the sameEXXONMOBIL RES & ENG CO·Filed 2018·Granted Oct 26, 2021·1 cites·14 claims
- 0275US10041156B2High strength austenitic-based steel with remarkable toughness of welding heat-affected zone and preparation method thereforPOSCO·Filed 2013·Granted Aug 7, 2018·1 cites·6 claims
- 0371US12480171B2Ultra-thick structural steel having excellent brittle crack initiation resistance, and manufacturing method thereforPOSCO·Filed 2019·Granted Nov 25, 2025·0 cites·8 claims
- 0468US11608549B2Cryogenic steel plate and method for manufacturing samePOSCO·Filed 2018·Granted Mar 21, 2023·0 cites·8 claims
- 0565US11434557B2Low-temperature steel plate having excellent impact toughness, and method for manufacturing samePOSCO·Filed 2018·Granted Sep 6, 2022·0 cites·4 claims
- 0664US11591679B2Low-temperature steel material having excellent toughness in welding portion thereof and manufacturing method thereforPOSCO·Filed 2018·Granted Feb 28, 2023·0 cites·9 claims
- 0763US12338515B2Ultra-thick steel excellent in brittle crack arrestability and manufacturing method thereforPOSCO·Filed 2019·Granted Jun 24, 2025·0 cites·5 claims
- 0862US8202102B2Earth terminalKIM JONG SOO·Filed 2010·Granted Jun 19, 2012·5 cites·6 claims
- 0961US11634784B2Ultra-thick steel material having excellent surface part NRL-DWT properties and method for manufacturing samePOSCO·Filed 2017·Granted Apr 25, 2023·0 cites·6 claims
- 1061US2014261918A1Enhanced wear resistant steel and methods of making the sameJIN HYUNWOO·Filed 2014·Application pending·0 cites
- 1160US2024336987A1Steel plate having excellent heat affected zone toughness and method for manufacturing samePOSCO CO LTD·Filed 2022·Application pending·0 cites
- 1258US10301707B2Steel having excellent weldability and impact toughness of welding zonePOSCO·Filed 2013·Granted May 28, 2019·0 cites·5 claims
- 1356US11649518B2Ultra-thick steel material having excellent surface part NRL-DWT properties and method for manufacturing samePOSCO·Filed 2017·Granted May 16, 2023·0 cites·9 claims
- 1455US2022325395A1High-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at center zone thereof, and method for manufacturing samePOSCO·Filed 2020·Application pending·0 cites
- 1552US2016319407A1Steel for low-temperature service having excellent surface processing qualityPOSCO·Filed 2014·Application pending·0 cites
- 1649US10883159B2High-strength steel having superior brittle crack arrestability, and production method thereforPOSCO·Filed 2015·Granted Jan 5, 2021·0 cites·5 claims
- 1749US10822671B2High-strength steel having superior brittle crack arrestability, and production method thereforPOSCO·Filed 2015·Granted Nov 3, 2020·0 cites·6 claims
- 1849US2017138511A1Expandable high-strength steel material and expanded high-strength steel pipe having superior expandability and collapse resistance, and methods for manufacturing thereofPOSCO·Filed 2014·Application pending·0 cites
- 1945US2014356220A1Wear resistant austenitic steel having superior machinability and ductility, and method for producing samePOSCO·Filed 2012·Application pending·0 cites
- 2045US2018371588A1Low yield ratio and high-strength steel having excellent stress corrosion cracking resistance and low temperature toughnessPOSCO·Filed 2016·Application pending·0 cites
- 2144US2018363107A1High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method thereforPOSCO·Filed 2016·Application pending·0 cites
- 2244US2018363081A1High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method thereforPOSCO·Filed 2016·Application pending·0 cites
- 2342US2017327922A1High-strength steel having superior brittle crack arrestability, and production method thereforPOSCO·Filed 2015·Application pending·0 cites
- 2441US2017342518A1Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method thereforPOSCO·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →