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Pohang, South Korea

Posco Co., Ltd

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USPTO Granted Patents = 255

EPO Patents = 124

Trademarks = 15

Forward Citations = 43

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420 inventors (with patents filed for the assignee):

Jin-Keun Oh (22 out of 48 patents)

Seong-Woo Kim (21 out of 44 patents)

Yeol-Rae Cho (14 out of 34 patents)

4. Il-Ryoung Sohn (12 out of 35 patents)

5. Sung-Il Kim (11 out of 19 patents)

6. Myung-Soo Kim (9 out of 34 patents)

7. Sang-Heon Kim (9 out of 29 patents)

8. Sang-Deok Kang (9 out of 15 patents)

9. Sang-Ho Han (8 out of 22 patents)

10. Hyun-Taek Na (8 out of 16 patents)

11. Tae-Chul Kim (7 out of 23 patents)

12. Jong-Tae Park (7 out of 18 patents)

13. Min-Seo Koo (7 out of 12 patents)

14. Dae-Woo Kim (7 out of 13 patents)

15. Jong-Sang Kim (6 out of 27 patents)

Core Competencies:

High-Strength Steel Sheet

Galvanized Steel

Corrosion Resistance

Workability Enhancements

Electrical Steel

Surface Treatment

Hot Press Forming

Welding Methods

Lithium Battery Components

Impact Resistance

Brittle Crack Resistance

Fatigue Properties

255 patents: Sort by Forward Citations

1. 12522903 - Austenitic stainless steel with excellent corrosion resistance of welded part (2026-01-13),

2. 12522888 - Method of manufacutring a high-strength cold rolled steel sheet having high hole expansion ratio, and highstrength hot-dip galvanized steel sheet (2026-01-13),

3. 12522887 - High-strength steel sheet having excellent hole expandability and method for manufacturing same (2026-01-13),

4. 12522734 - Surface treatment composition for ternary hot-dip galvannealed steel sheet, surface-treated ternary hot-dip galvannealed steel sheet using same, and preparation method thereof (2026-01-13),

5. 12521757 - Bilayer composition for surface treatment of steel plate and surface-treated steel plate using same (2026-01-13),

6. 12516404 - Zinc-based plated steel sheet having excellent room temperature aging resistance and bake hardenability, and method for producing same (2026-01-06),

7. 12516394 - Plated steel sheet for hot press forming having excellent impact properties after hot press forming, hot press formed member, and manufacturing methods thereof (2026-01-06),

8. 12509751 - High strength steel sheet having excellent workability and method for manufacturing same (2025-12-30),

9. 12509742 - Ultra-high strength steel sheet having excellent shear workability and method for manufacturing same (2025-12-30),

10. 12508796 - Unconstrained vibration damping metal sheet with foam pores and method for manufacturing same (2025-12-30),

11. 12497708 - Electrogalvanized steel sheet having superb whiteness and method for manufacturing same (2025-12-16),

12. 12497706 - Solution for electroplating iron, and electroplated steel sheet manufactured by using same (2025-12-16),

13. 12492456 - Ultra high strength and high ductility steel sheet having excellent yield ratio and manufacturing method for same (2025-12-09),

14. 12480171 - Ultra-thick structural steel having excellent brittle crack initiation resistance, and manufacturing method therefor (2025-11-25),

15. 12479192 - Zinc-based coated steel material having excellent corrosion resistance and spot weldability (2025-11-25),

Company Overview

Posco Co., Ltd, headquartered in Pohang, South Korea, is a leading manufacturer specializing in high-strength steel products. The company focuses on developing advanced steel solutions, including high-strength steel sheets and galvanized steel, which are essential for various industries such as automotive and construction. Posco is recognized for its innovations in corrosion resistance, workability enhancements, and surface treatment technologies, as well as its expertise in electrical steel and hot press forming techniques, contributing significantly to the global steel market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

255 Patents

#3 in Pohang

#93 in South Korea

#3,425 in the World

Pohang, South Korea

Posco Co., Ltd

Forward Citations = 43

420 inventors:

Jin-Keun Oh (22 out of 48 patents)

Seong-Woo Kim (21 out of 44 patents)

Yeol-Rae Cho (14 out of 34 patents)

4. Il-Ryoung Sohn (12 out of 35 patents)

5. Sung-Il Kim (11 out of 19 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Posco Co., Ltd. Retrieved from https://idiyas.com/company/posco-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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