List of building maintenance patents

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Name	Description	Patent Applicant	Current Assignee	Patent Jurisdiction	Patent Number	Date of Patent
‌ US Patent 11299639 Zinc-based plated steel material having excellent sealer adhesion		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11299639	April 12, 2022
‌ US Patent 11339460 Ferritic stainless steel having excellent high-temperature oxidation resistance, and manufacturing method therefor		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11339460	May 24, 2022
‌ US Patent 11338549 Steel sheet for hot press formed member having excellent resistance to hydrogen delayed fracture and method for manufacturing thereof	Patent 11338549 was granted and assigned to POSCO E&C on May, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11338549	May 24, 2022
‌ US Patent 11338551 Hot-dip galvanized steel sheet having excellent low-temperature adhesion and workability		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11338551	May 24, 2022
‌ US Patent 11345984 High-strength steel sheet with excellent crashworthiness characteristics and formability and method of manufacturing the same		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11345984	May 31, 2022
‌ US Patent 11345985 High-strength steel sheet with excellent crashworthiness characteristics and formability and method of manufacturing the same	Patent 11345985 was granted and assigned to POSCO E&C on May, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11345985	May 31, 2022
‌ US Patent 11358200 Roll stamping apparatus and method	Patent 11358200 was granted and assigned to POSCO E&C on June, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11358200	June 14, 2022
‌ US Patent 9446929 Steel strip stabilizing apparatus	Patent 9446929 was granted and assigned to POSCO E&C on September, 2016 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	9446929	September 20, 2016
‌ US Patent 11332816 Zinc alloy plated steel material having excellent surface quality and corrosion resistance		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11332816	May 17, 2022
‌ US Patent 10590522 Aluminum-iron alloy-coated steel sheet for hot press forming, having excellent hydrogen delayed fracture resistance, peeling resistance, and weldability and hot-formed member using same	Patent 10590522 was granted and assigned to POSCO E&C on March, 2020 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	10590522	March 17, 2020
‌ US Patent 11001918 High-strength hot-dip galvanized steel sheet having excellent plating surface quality and adhesion, and method of manufacturing the same	Patent 11001918 was granted and assigned to POSCO E&C on May, 2021 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11001918	May 11, 2021
‌ US Patent 11274357 Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof	Patent 11274357 was granted and assigned to POSCO E&C on March, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11274357	March 15, 2022
‌ US Patent 9744743 Zn—Mg alloy plated steel sheet, and method for manufacturing same	Patent 9744743 was granted and assigned to POSCO E&C on August, 2017 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	9744743	August 29, 2017
‌ US Patent 11326221 Grain-oriented electrical steel sheet and manufacturing method therefor		POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11326221	May 10, 2022
‌ US Patent 10934601 Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof	Patent 10934601 was granted and assigned to POSCO E&C on March, 2021 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	10934601	March 2, 2021
‌ US Patent 8999085 High manganese steel strips with excellent coatability and superior surface property, coated steel strips using steel strips and method for manufacturing the steel strips	Patent 8999085 was granted and assigned to POSCO E&C on April, 2015 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	8999085	April 7, 2015
‌ US Patent 9580786 High Mn steel sheet for high corrosion resistance and method of manufacturing galvanizing the steel sheet	Patent 9580786 was granted and assigned to POSCO E&C on February, 2017 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	9580786	February 28, 2017
‌ US Patent 11299791 Non-oriented electrical steel sheet and manufacturing method therefor	Patent 11299791 was granted and assigned to POSCO E&C on April, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11299791	April 12, 2022
‌ US Patent 7622071 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same	Patent 7622071 was granted and assigned to POSCO E&C on November, 2009 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	7622071	November 24, 2009
‌ US Patent 11313011 Method for refining magnetic domains of grain-oriented electrical steel sheet	Patent 11313011 was granted and assigned to POSCO E&C on April, 2022 by the United States Patent and Trademark Office.		POSCO E&C	United States Patent and Trademark Office	11313011	April 26, 2022
‌ US Patent 11299793 Steel sheet having excellent resistance to liquid metal embrittlement cracks and method for manufacturing the same	Patent 11299793 was granted and assigned to POSCO E&C on April, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11299793	April 12, 2022
‌ US Patent 9963758 Hot press formed parts having excellent powdering resistance during hot press forming	Patent 9963758 was granted and assigned to POSCO E&C on May, 2018 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	9963758	May 8, 2018
‌ US Patent 11141953 Steel sheet for hot press formed member having excellent painting adhesion and post-painting corrosion resistance	Patent 11141953 was granted and assigned to POSCO E&C on October, 2021 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11141953	October 12, 2021
‌ US Patent 11335475 Insulation film composition for grain-oriented electrical steel sheet, method for forming insulation film for grain-oriented electrical steel sheet using same, and grain-oriented electrical steel sheet	Patent 11335475 was granted and assigned to POSCO E&C on May, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11335475	May 17, 2022
‌ US Patent 11299792 Non-oriented electrical steel sheet and manufacturing method therefor	Patent 11299792 was granted and assigned to POSCO E&C on April, 2022 by the United States Patent and Trademark Office.	POSCO E&C	POSCO E&C	United States Patent and Trademark Office	11299792	April 12, 2022

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