| Utility: Steel sheet for hot press formed member having excellent resistance to hydrogen delayed fracture and method for manufacturing thereof Filling date: 6 Sep 2025 Issue date: 24 May 2022 | 31 May 2018 | 24 May 2022 |
| Utility: Gold-colored steel sheet and manufacturing method thereof Filling date: 6 Sep 2025 Issue date: 24 May 2022 | 15 May 2017 | 24 May 2022 |
| Utility: Composition for washing pickled steel plate, method for washing pickled steel plate by using same, and steel plate obtained thereby Filling date: 6 Sep 2025 Issue date: 17 May 2022 | 11 May 2021 | 17 May 2022 |
| Utility: Zinc alloy plated steel material having excellent surface quality and corrosion resistance Filling date: 6 Sep 2025 Issue date: 17 May 2022 | 13 Dec 2018 | 17 May 2022 |
| Utility: High-hardness wear-resistant steel and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 17 May 2022 | 4 Dec 2017 | 17 May 2022 |
| Utility: 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 Filling date: 6 Sep 2025 Issue date: 17 May 2022 | 22 Dec 2016 | 17 May 2022 |
| Utility: LITHIUM METAL ANODE, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY USING SAME Filling date: 6 Sep 2025 Issue date: 12 May 2022 | 9 Jul 2019 | 12 May 2022 |
| Utility: Grain-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 10 May 2022 | 13 Dec 2017 | 10 May 2022 |
| Utility: Grain-oriented electrical steel sheet and magnetic domain refinement method therefor Filling date: 6 Sep 2025 Issue date: 3 May 2022 | 20 Dec 2017 | 3 May 2022 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 3 May 2022 | 19 Dec 2017 | 3 May 2022 |
| Utility: STEEL PLATE HAVING EXCELLENT HEAT AFFECTED ZONE TOUGHNESS AND METHOD FOR MANUFACTURING THEREOF Filling date: 6 Sep 2025 Issue date: 28 Apr 2022 | 29 Nov 2019 | 28 Apr 2022 |
| Utility: NON-DIRECTIONAL ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 28 Apr 2022 | 27 Nov 2019 | 28 Apr 2022 |
| Utility: Method for refining magnetic domains of grain-oriented electrical steel sheet Filling date: 6 Sep 2025 Issue date: 26 Apr 2022 | 20 Dec 2017 | 26 Apr 2022 |
| Utility: MOLD FLUX AND CASTING METHOD USING SAME Filling date: 6 Sep 2025 Issue date: 21 Apr 2022 | 19 May 2020 | 21 Apr 2022 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MAGNETIC DOMAIN REFINEMENT METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 21 Apr 2022 | 23 May 2019 | 21 Apr 2022 |
| Utility: ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 21 Apr 2022 | 13 Dec 2018 | 21 Apr 2022 |
| Utility: High-strength hot-dip zinc plated steel material having excellent plating properties and method for preparing same Filling date: 6 Sep 2025 Issue date: 19 Apr 2022 | 21 Dec 2016 | 19 Apr 2022 |
| Utility: Steel sheet having excellent resistance to liquid metal embrittlement cracks and method for manufacturing the same Filling date: 6 Sep 2025 Issue date: 12 Apr 2022 | 22 Jun 2018 | 12 Apr 2022 |
| Utility: Zinc-based plated steel material having excellent sealer adhesion Filling date: 6 Sep 2025 Issue date: 12 Apr 2022 | 22 Dec 2017 | 12 Apr 2022 |
| Utility: Austenitic stainless steel product having excellent surface properties and manufacturing method of the same Filling date: 6 Sep 2025 Issue date: 12 Apr 2022 | 4 Dec 2017 | 12 Apr 2022 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 12 Apr 2022 | 9 Dec 2016 | 12 Apr 2022 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 12 Apr 2022 | 21 Dec 2015 | 12 Apr 2022 |
| Utility: ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 7 Apr 2022 | 17 Dec 2021 | 7 Apr 2022 |
| Utility: HIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT BLANKING PROPERTIES AND UNIFORMITY, AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 7 Apr 2022 | 18 Dec 2019 | 7 Apr 2022 |
| Utility: FORMING METHOD FOR STRUCTURE FOR REINFORCEMENT AND STRUCTURE FOR REINFORCEMENT Filling date: 6 Sep 2025 Issue date: 31 Mar 2022 | 19 Nov 2019 | 31 Mar 2022 |
| Utility: MICRO-GRID SYSTEM WITH UN-INTERRUPTIBLE POWER SUPPLY Filling date: 6 Sep 2025 Issue date: 24 Mar 2022 | 11 Dec 2019 | 24 Mar 2022 |
| Utility: CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 24 Mar 2022 | 29 Nov 2019 | 24 Mar 2022 |
| Utility: ELECTROPLATED STEEL SHEET HAVING EXCELLENT SURFACE APPEARANCE, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 17 Mar 2022 | 18 Dec 2019 | 17 Mar 2022 |
| Utility: Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof Filling date: 6 Sep 2025 Issue date: 15 Mar 2022 | 21 Jan 2021 | 15 Mar 2022 |
| Utility: ALLOY COATED STEEL SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 10 Mar 2022 | 18 Dec 2019 | 10 Mar 2022 |
| Utility: ANNEALING SEPARATOR 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: 10 Mar 2022 | 18 Dec 2019 | 10 Mar 2022 |
| Utility: HIGH STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT HOLE EXPANSION RATIO AND MANUFACTURING METHOD FOR SAME Filling date: 6 Sep 2025 Issue date: 10 Mar 2022 | 18 Dec 2019 | 10 Mar 2022 |
| Utility: PLATED STEEL MATERIAL HAVING EXCELLENT ADHESION TO PLATING AND CORROSION RESISTANCE, AND MANUFACTURING METHOD FOR SAME Filling date: 6 Sep 2025 Issue date: 10 Mar 2022 | 17 Dec 2019 | 10 Mar 2022 |
| Utility: APPARATUS AND METHOD FOR CONTROLLING COATING LAYER IN PVD PLATING PROCESS Filling date: 6 Sep 2025 Issue date: 10 Mar 2022 | 10 Dec 2019 | 10 Mar 2022 |
| Utility: METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY Filling date: 6 Sep 2025 Issue date: 10 Mar 2022 | 6 Dec 2019 | 10 Mar 2022 |
| Utility: Antimicrobial adhesive protein, antimicrobial nanoparticle, antimicrobial composition comprising same nanoparticle, and preparation method for same composition Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 13 Jul 2018 | 8 Mar 2022 |
| Utility: High-strength steel having excellent fracture initiation resistance and fracture propagation arrestability at low temperature and method of manufacturing the same Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 22 Dec 2017 | 8 Mar 2022 |
| Utility: Magnesium alloy sheet and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 21 Dec 2017 | 8 Mar 2022 |
| Utility: FURNACE FOR PRODUCING SECONDARY BATTERY CATHODE MATERIAL AND METHOD FOR FIRING SECONDARY BATTERY CATHODE MATERIAL Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 19 Dec 2019 | 3 Mar 2022 |
| Utility: STEEL MATERIAL FOR BRAKE DISC OF MOTOR VEHICLE HAVING EXCELLENT WEAR RESISTANCE AND HIGH TEMPERATURE STRENGTH AND METHOD OF MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 18 Dec 2019 | 3 Mar 2022 |
| Utility: APPARATUS FOR COOLING METAL MATERIAL Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 17 Dec 2019 | 3 Mar 2022 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 10 Dec 2019 | 3 Mar 2022 |
| Utility: HIGH-STRENGTH STRUCTURAL STEEL HAVING EXCELLENT COLD BENDABILITY, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 6 Dec 2019 | 3 Mar 2022 |
| Utility: HIGH STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY, AND METHOD FOR MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 1 Nov 2019 | 3 Mar 2022 |
| Utility: PLATED STEEL SHEET HAVING EXCELLENT FUSION RESISTANCE, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 3 Mar 2022 | 20 Feb 2019 | 3 Mar 2022 |
| Utility: Casting sliding gate Filling date: 6 Sep 2025 Issue date: 1 Mar 2022 | 22 Dec 2017 | 1 Mar 2022 |
| Utility: STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT COATING ADHESION AND MANUFACTURING METHOD FOR THE SAME Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 2 Nov 2021 | 24 Feb 2022 |
| Utility: HIGH-STRENGTH COLD ROLLED STEEL SHEET AND GALVANNEALED STEEL SHEET HAVING EXCELLENT BURRING PROPERTY, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 19 Dec 2019 | 24 Feb 2022 |
| Utility: ZINC PLATED STEEL SHEET HAVING EXCELLENT SPOT WELDABILITY AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 18 Dec 2019 | 24 Feb 2022 |
| Utility: NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 24 Feb 2022 | 18 Dec 2019 | 24 Feb 2022 |
