| Utility: ULTRA-THICK STRUCTURAL STEEL HAVING EXCELLENT BRITTLE CRACK INITIATION RESISTANCE, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 2 Dec 2019 | 24 Feb 2022 |
| Utility: BILAYER COMPOSITION FOR SURFACE TREATMENT OF STEEL PLATE AND SURFACE-TREATED STEEL PLATE USING SAME Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 18 Sep 2019 | 24 Feb 2022 |
| Utility: Zinc-based plated steel sheet having post-treated coating formed thereon Filling date: 6 Sep 2025 Issue date: 22 Feb 2022 | 8 Sep 2020 | 22 Feb 2022 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 22 Feb 2022 | 19 Dec 2017 | 22 Feb 2022 |
| Utility: Method for refining magnetic domain of grain-oriented electrical steel plate and device therefor Filling date: 6 Sep 2025 Issue date: 22 Feb 2022 | 11 Dec 2017 | 22 Feb 2022 |
| Utility: ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 18 Dec 2019 | 17 Feb 2022 |
| Utility: ALUMINUM-BASED PLATED STEEL PLATE FOR HOT PRESS HAVING EXCELLENT RESISTANCE AGAINST HYDROGEN DELAYED FRACTURE AND SPOT WELDABILITY, AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 29 Nov 2019 | 17 Feb 2022 |
| Utility: STEEL SHEET PLATED WITH AL-FE ALLOY FOR HOT PRESS FORMING HAVING EXCELLENT CORROSION RESISTANCE AND HEAT RESISTANCE, HOT PRESS FORMED PART, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 29 Nov 2019 | 17 Feb 2022 |
| Utility: NON-DIRECTIONAL ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 26 Nov 2019 | 17 Feb 2022 |
| Utility: AUSTENITIC STAINLESS STEEL HAVING EXCELLENT PIPE-EXPANDABILITY AND AGE CRACKING RESISTANCE Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 22 Aug 2019 | 17 Feb 2022 |
| Utility: METHOD FOR MANUFACTURING POROUS POLYSILOXANE FILM, POROUS POLYSILOXANE FILM MANUFACTURED THEREBY, AND SOLAR CELL MODULE COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 2 Aug 2019 | 17 Feb 2022 |
| Utility: CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 17 Feb 2022 | 13 Dec 2018 | 17 Feb 2022 |
| Utility: Zinc alloy plated steel material having excellent weldability and processed-part corrosion resistance Filling date: 6 Sep 2025 Issue date: 15 Feb 2022 | 27 Jan 2020 | 15 Feb 2022 |
| Utility: Photovoltaic power generation module Filling date: 6 Sep 2025 Issue date: 15 Feb 2022 | 7 Dec 2018 | 15 Feb 2022 |
| Utility: Brake disc and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 15 Feb 2022 | 13 Dec 2017 | 15 Feb 2022 |
| Utility: HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDING WORKABILITY AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 19 Dec 2019 | 10 Feb 2022 |
| Utility: ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 18 Dec 2019 | 10 Feb 2022 |
| Utility: HIGH-STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT ELECTRICAL RESISTANCE SPOT WELDABILITY, AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 18 Dec 2019 | 10 Feb 2022 |
| Utility: STRUCTURAL STEEL HAVING EXCELLENT BRITTLE FRACTURE RESISTANCE AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 13 Dec 2019 | 10 Feb 2022 |
| Utility: IRON-ALUMINUM-BASED PLATED STEEL SHEET FOR HOT PRESS FORMING, HAVING EXCELLENT HYDROGEN DELAYED FRACTURE PROPERTIES AND SPOT WELDING PROPERTIES, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 29 Nov 2019 | 10 Feb 2022 |
| Utility: PLATED STEEL PLATE HAVING EXCELLENT GLOSSINESS AND SURFACE PROPERTY, AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 27 Nov 2019 | 10 Feb 2022 |
| Utility: ACID-RESISTANT STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 26 Nov 2019 | 10 Feb 2022 |
| Utility: ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 26 Nov 2019 | 10 Feb 2022 |
| Utility: ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 26 Nov 2019 | 10 Feb 2022 |
| Utility: ANNEALING SEPARATOR COMPOSITION FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRIAL STEEL SHEET, AND METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 25 Sep 2019 | 10 Feb 2022 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 25 Sep 2019 | 10 Feb 2022 |
| Utility: ABRASION RESISTANT STEEL HAVING EXCELLENT HARDNESS AND IMPACT TOUGHNESS AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 23 Sep 2019 | 10 Feb 2022 |
| Utility: FOREIGN SUBSTANCE COLECTING APPARATUS AND ELECTRICAL STEEL SHEET MANUFACTURING FACILITY INCLUDING SAME Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 18 Sep 2019 | 10 Feb 2022 |
| Utility: HOT ROLLED AND UNANNEALED FERRITIC STAINLESS STEEL SHEET HAVING EXCELLENT IMPACT TOUGHNESS, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 10 Feb 2022 | 23 Aug 2019 | 10 Feb 2022 |
| Utility: HIGH-STRENGTH STAINLESS STEEL Filling date: 6 Sep 2025 Issue date: 3 Feb 2022 | 23 Aug 2019 | 3 Feb 2022 |
| Utility: ZEOLITE AND PREPARATION METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 3 Feb 2022 | 22 Jul 2019 | 3 Feb 2022 |
| Utility: NON-GRAIN ORIENTED ELECTRICAL STEEL AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 3 Feb 2022 | 23 May 2019 | 3 Feb 2022 |
| Utility: HETEROGENEOUS COATED STEEL SHEET HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE, AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 19 Dec 2019 | 27 Jan 2022 |
| Utility: STEEL PLATE FOR HIGH TEMPERATURE APPLICATIONS HAVING EXCELLENT STRENGTH AT HIGH TEMPERATURE AND METHOD FOR MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 29 Nov 2019 | 27 Jan 2022 |
| Utility: ULTRA-THICK STEEL EXCELLENT IN BRITTLE CRACK ARRESTABILITY AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 29 Nov 2019 | 27 Jan 2022 |
| Utility: HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT SURFACE APPEARANCE AND LOW-TEMPERATURE BONDING BRITTLENESS Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 28 Nov 2019 | 27 Jan 2022 |
| Utility: GALVANIZED STEEL SHEET HAVING EXCELLENT HARDNESS AND GALLING RESISTANCE, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 27 Nov 2019 | 27 Jan 2022 |
| Utility: BATTERY CASE Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 26 Nov 2019 | 27 Jan 2022 |
| Utility: ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 26 Nov 2019 | 27 Jan 2022 |
| Utility: HIGH STRENGTH HOT ROLLED STEEL SHEET HAVING EXCELLENT ELONGATED AND METHOD FOR MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 27 Jan 2022 | 26 Nov 2019 | 27 Jan 2022 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 25 Jan 2022 | 23 Dec 2016 | 25 Jan 2022 |
| Utility: NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 20 Jan 2022 | 27 Nov 2019 | 20 Jan 2022 |
| Utility: Method for Manufacturing Torsion Beam Filling date: 6 Sep 2025 Issue date: 20 Jan 2022 | 25 Nov 2019 | 20 Jan 2022 |
| Utility: NON-ORIENTED ELECTRICAL STEEL SHEET HAVING SUPERIOR MAGNETIC PROPERTIES AND METHOD OF MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 20 Jan 2022 | 8 Nov 2019 | 20 Jan 2022 |
| Utility: HIGH-STRENGTH NONMAGNETIC AUSTENITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 20 Jan 2022 | 31 Oct 2019 | 20 Jan 2022 |
| Utility: LOCAL HEAT TREATMENT SYSTEM AND COLD FORMING METHOD USING THE SAME Filling date: 6 Sep 2025 Issue date: 20 Jan 2022 | 8 Aug 2019 | 20 Jan 2022 |
| Utility: Dephosphorizing flux and method for preparing same Filling date: 6 Sep 2025 Issue date: 18 Jan 2022 | 11 Dec 2017 | 18 Jan 2022 |
| Utility: Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet Filling date: 6 Sep 2025 Issue date: 18 Jan 2022 | 25 Oct 2017 | 18 Jan 2022 |
| Utility: METHOD OF MANUFACTURING HOT PRESS-FORMED MEMBER HAVING EXCELLENT PRODUCTIVITY, WELDABILITY AND FORMABILITY Filling date: 6 Sep 2025 Issue date: 13 Jan 2022 | 1 Sep 2020 | 13 Jan 2022 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 13 Jan 2022 | 28 Nov 2019 | 13 Jan 2022 |
