KWAK; Jai-Hyun

Patent Applications and Registrations

Patent applications and USPTO patent grants for KWAK; Jai-Hyun.The latest application filed is for "high-strength cold rolled steel sheet and galvannealed steel sheet having excellent burring property, and manufacturing method therefor".

Company Profile

7.17.20

KWAK; Jai-Hyun - Gwangyang-si KR
Kwak; Jai Hyun - Gwangyang KR
Kwak; Jai Hyun - Jeollanam-do KR
Kwak; Jai-Hyun - Pohang-si 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
High-strength Cold Rolled Steel Sheet And Galvannealed Steel Sheet Having Excellent Burring Property, And Manufacturing Method Therefor App 20220056563 - CHO; Hang-Sik ; et al.	2022-02-24
High-strength Cold Rolled Steel Sheet Having High Hole Expansion Ratio, Highstrength Hot-dip Galvanized Steel Sheet, And Manufacturing Methods Therefor App 20220033926 - IM; Young-Roc ; et al.	2022-02-03
High strength cold-rolled steel sheet and hot-dip galvanized steel sheet having excellent hole expansion, ductility and surface treatment properties, and method for manufacturing same Grant 11,091,818 - Kwak , et al. August 17, 2	2021-08-17
Method For Preventing Spot Welding Crack Of Galvanized Steel Plate App 20210170516 - Kwak; Jai-Hyun	2021-06-10
High Strength Cold-rolled Steel Sheet Having Excellent Yield Strength, Ductility, And Hole Expandability, Hot-dip Galvanized Ste App 20200190612 - KWAK; Jai-Hyun ; et al.	2020-06-18
Method of continuously annealing a strip Grant 10,604,820 - Kwak , et al.	2020-03-31
High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing same Grant 10,519,526 - Lee , et al. Dec	2019-12-31
Method Of Continuously Annealing A Strip App 20190276913 - KWAK; Jai-Hyun ; et al.	2019-09-12
Apparatus for continuous annealing of strip and method for continuous annealing of same Grant 10,358,691 - Kwak , et al. July 23, 2	2019-07-23
Lightweight steel sheet having excellent strength and ductility and method for manufacturing same Grant 10,273,556 - Kwak , et al.	2019-04-30
High Strength Cold-rolled Steel Sheet And Hot- Dip Galvanized Steel Sheet Having Excellent Hole Expansion, Ductility And Surface Treatment Properties, And Method For Manufacturing Same App 20180371569 - KWAK; Jai-Hyun ; et al.	2018-12-27
Ferritic lightweight high-strength steel sheet having excellent stiffness and ductility, and method of manufacturing the same Grant 9,856,542 - Kwak , et al. January 2, 2	2018-01-02
Austenitic, lightweight, high-strength steel sheet having high yield ratio and ductility, and method for producing the same Grant 9,738,958 - Chin , et al. August 22, 2	2017-08-22
High strength thin steel sheet for the superior press formability and surface quality and galvanized steel sheet and method for manufacturing the same Grant 9,598,753 - Kwak , et al. March 21, 2	2017-03-21
High-strength Cold Rolled Steel Sheet Having Excellent Ductility, Hot-dip Galvanized Steel Sheet And Method For Manufacturing Same App 20170051378 - LEE; Kyoo-Young ; et al.	2017-02-23
Apparatus For Continuous Annealing Of Strip And Method For Continuous Annealing Of Same App 20160355903 - KWAK; Jai-Hyun ; et al.	2016-12-08
Lightweight Steel Sheet Having Excellent Strength And Ductility And Method For Manufacturing Same App 20160312332 - KWAK; Jai-Hyun ; et al.	2016-10-27
High Strength Thin Steel Sheet for the Superior Press Formability and Surface Quality and Galvanized Steel Sheet and Method for Manufacturing the Same App 20160040275 - Kwak; Jai Hyun ; et al.	2016-02-11
High strength thin steel sheet for the superior press formability and surface quality and galvanized steel sheet and method for manufacturing the same Grant 9,194,030 - Kwak , et al. November 24, 2	2015-11-24
High strength steel sheet and hot dip galvanized steel sheet having high ductility and excellent delayed fracture resistance and method for manufacturing the same Grant 9,109,273 - Jin , et al. August 18, 2	2015-08-18
Ferritic Lightweight High-Strength Steel Sheet Having Excellent Stiffness and Ductility, and Method of Manufacturing the Same App 20150218668 - Kwak; Jai-Hyun ; et al.	2015-08-06
Low specific gravity and high strength steel sheets with excellent ridging resistibility and manufacturing methods thereof Grant 8,778,097 - Chin , et al. July 15, 2	2014-07-15
Method for manufacturing an ultrahigh strength hot dip galvanized steel sheet having martensitic structure as matrix Grant 8,741,078 - Song , et al. June 3, 2	2014-06-03
Steel Sheet for Formed Member Having Enhanced Ductility, Formed Member, and Method for Manufacturing the Formed Member App 20130295402 - Oh; Jin-Keun ; et al.	2013-11-07
Austenitic, Lightweight, High-Strength Steel Sheet Having High Yield Ratio and Ductility, and Method for Producing the Same App 20130295409 - Chin; Kwang-Geun ; et al.	2013-11-07
Ultrahigh Strength Hot Dip Galvanized Steel Sheet Having Martensitic Structure As Matrix, And Manufacturing Method Thereof App 20110168301 - Song; Tae-Jin ; et al.	2011-07-14
High Strength Steel Sheet and Hot Dip Galvanized Steel Sheet Having High Ductility and Excellent Delayed Fracture Resistance and Method for Manufacturing the Same App 20110083774 - Jin; Young Hoon ; et al.	2011-04-14
High-Strength Steel Sheet with Excellent Ductility and Crackless Edge Portion, Hot-Dip Galvanized Steel Sheet, and Manufacturing Method Thereof App 20110064968 - Kim; Sung-Il ; et al.	2011-03-17
High Strength Thin Steel Sheet For The Superior Press Formability And Surface Quality And Galvanized Steel Sheet And Method For Manufacturing The Same App 20110030857 - Kwak; Jai Hyun ; et al.	2011-02-10
Low Specific Gravity And High Strength Steel Sheets With Excellent Ridging Resistibility And Manufacturing Methods Thereof App 20090297387 - Chin; Kwang Geun ; et al.	2009-12-03

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