Lee; Hak-Cheol

Patent Applications and Registrations

Patent applications and USPTO patent grants for Lee; Hak-Cheol.The latest application filed is for "ultra-thick structural steel having excellent brittle crack initiation resistance, and manufacturing method therefor".

Company Profile

9.7.23

Lee; Hak-Cheol - Pohang-si KR
Lee; Hak-Cheol - Kyungsanbook-do KR
Lee; Hak-Cheol - Incheon KR

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Low-temperature steel plate having excellent impact toughness, and method for manufacturing same Grant 11,434,557 - Lee September 6, 2	2022-09-06
Ultra-thick Structural Steel Having Excellent Brittle Crack Initiation Resistance, And Manufacturing Method Therefor App 20220056544 - LEE; Hak-Cheol	2022-02-24
Ultra-thick Steel Excellent In Brittle Crack Arrestability And Manufacturing Method Therefor App 20220025491 - Lee; Hak-Cheol	2022-01-27
Enhanced wear resistant steel and methods of making the same Grant 11,155,905 - Jin , et al. October 26, 2	2021-10-26
Low-temperature Steel Material Having Excellent Toughness In Welding Portion Thereof And Manufacturing Method Therefor App 20210010114 - Lee; Hak-Cheol	2021-01-14
High-strength steel having superior brittle crack arrestability, and production method therefor Grant 10,883,159 - Lee , et al. January 5, 2	2021-01-05
Cryogenic Steel Plate And Method For Manufacturing Same App 20200347487 - LEE; Hak-Cheol	2020-11-05
High-strength steel having superior brittle crack arrestability, and production method therefor Grant 10,822,671 - Lee , et al. November 3, 2	2020-11-03
Low-temperature Steel Plate Having Excellent Impact Toughness, And Method For Manufacturing Same App 20200283877 - Lee; Hak-Cheol	2020-09-10
Ultra-thick Steel Material Having Excellent Surface Part Nrl-dwt Properties And Method For Manufacturing Same App 20200109461 - LEE; Hak-Cheol ; et al.	2020-04-09
Ultra-thick Steel Material Having Excellent Surface Part Nrl-dwt Properties And Method For Manufacturing Same App 20190390292 - Lee; Hak-Cheol ; et al.	2019-12-26
Steel having excellent weldability and impact toughness of welding zone Grant 10,301,707 - Lee , et al.	2019-05-28
High-strength Steel Having Superior Brittle Crack Arrestability, And Production Method Therefor App 20190093204 - LEE; Hak-Cheol ; et al.	2019-03-28
Low Yield Ratio And High-strength Steel Having Excellent Stress Corrosion Cracking Resistance And Low Temperature Toughness App 20180371588 - JANG; Sung-Ho ; et al.	2018-12-27
High-strength Steel Having Excellent Brittle Crack Arrestability And Welding Part Brittle Crack Initiation Resistance, And Production Method Therefor App 20180363081 - LEE; Hak-Cheol ; et al.	2018-12-20
High-strength Steel Having Excellent Brittle Crack Arrestability And Welding Part Brittle Crack Initiation Resistance, And Production Method Therefor App 20180363107 - LEE; Hak-Cheol ; et al.	2018-12-20
Enhanced Wear Resistant Steel And Methods Of Making The Same App 20180258515 - Jin; Hyunwoo ; et al.	2018-09-13
High strength austenitic-based steel with remarkable toughness of welding heat-affected zone and preparation method therefor Grant 10,041,156 - Lee , et al. August 7, 2	2018-08-07
Structural Ultra-thick Steel Having Excellent Resistance To Brittle Crack Propagation, And Production Method Therefor App 20170342518 - LEE; Hak-Cheol ; et al.	2017-11-30
High-strength Steel Having Superior Brittle Crack Arrestability, And Production Method Therefor App 20170335424 - LEE; Hak-Cheol ; et al.	2017-11-23
High-strength Steel Having Superior Brittle Crack Arrestability, And Production Method Therefor App 20170327922 - LEE; Hak-Cheol ; et al.	2017-11-16
Expandable High-strength Steel Material And Expanded High-strength Steel Pipe Having Superior Expandability And Collapse Resistance, And Methods For Manufacturing Thereof App 20170138511 - LEE; Hak-Cheol ; et al.	2017-05-18
Steel For Low-temperature Service Having Excellent Surface Processing Quality App 20160319407 - LEE; Soon-Gi ; et al.	2016-11-03
Steel Having Excellent Weldability And Impact Toughness Of Welding Zone App 20160312344 - LEE; Hak-Cheol ; et al.	2016-10-27
High Strength Austenitic-based Steel With Remarkable Toughness Of Welding Heat-affected Zone And Preparation Method Therefor App 20150354037 - LEE; Hak-Cheol ; et al.	2015-12-10
Wear Resistant Austenitic Steel Having Superior Machinability And Ductility, And Method For Producing Same App 20140356220 - Lee; Soon-Gi ; et al.	2014-12-04
Enhanced Wear Resistant Steel And Methods Of Making The Same App 20140261918 - Jin; HyunWoo ; et al.	2014-09-18
Earth terminal Grant 8,202,102 - Kim , et al. June 19, 2	2012-06-19
Earth Terminal App 20110104961 - Kim; Jong Soo ; et al.	2011-05-05

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