| Utility: HOT-DIP GALVANIZED STEEL MATERIAL HAVING EXCELLENT WELDABILITY AND PRESS WORKABILITY AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 16 Jan 2020 | 21 Dec 2017 | 16 Jan 2020 |
| Utility: HIGH-STRENGTH HIGH-TOUGHNESS THICK STEEL PLATE AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 16 Jan 2020 | 21 Dec 2017 | 16 Jan 2020 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 16 Jan 2020 | 13 Dec 2017 | 16 Jan 2020 |
| Utility: Hot press forming parts having excellent bending properties and method for manufacturing the same Filling date: 7 Nov 2025 Issue date: 14 Jan 2020 | 1 Nov 2018 | 14 Jan 2020 |
| Utility: Hot-rolled steel sheet for high strength galvanized steel sheet, having excellent surface quality, and method for producing same Filling date: 7 Nov 2025 Issue date: 14 Jan 2020 | 24 Dec 2014 | 14 Jan 2020 |
| Utility: HOT PRESS-FORMED MEMBER HAVING EXCELLENT CRACK PROPAGATION RESISTANCE AND DUCTILITY, AND METHOD FOR PRODUCING SAME Filling date: 7 Nov 2025 Issue date: 9 Jan 2020 | 7 Jul 2017 | 9 Jan 2020 |
| Utility: Method for manufacturing a hot dip galvanized and galvannealed steel sheet having excellent elongation properties Filling date: 7 Nov 2025 Issue date: 7 Jan 2020 | 14 Jun 2017 | 7 Jan 2020 |
| Utility: MULTI-LAYERED ZINC ALLOY PLATED STEEL HAVING EXCELLENT SPOT WELDABILITY AND CORROSION RESISTANCE Filling date: 7 Nov 2025 Issue date: 2 Jan 2020 | 22 Dec 2017 | 2 Jan 2020 |
| Utility: High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing same Filling date: 7 Nov 2025 Issue date: 31 Dec 2019 | 9 Jan 2015 | 31 Dec 2019 |
| Utility: ULTRA-THICK STEEL MATERIAL HAVING EXCELLENT SURFACE PART NRL-DWT PROPERTIES AND METHOD FOR MANUFACTURING SAME Filling date: 7 Nov 2025 Issue date: 26 Dec 2019 | 20 Dec 2017 | 26 Dec 2019 |
| Utility: HIGH-HARDNESS WEAR-RESISTANT STEEL AND METHOD FOR MANUFACTURING SAME Filling date: 7 Nov 2025 Issue date: 26 Dec 2019 | 4 Dec 2017 | 26 Dec 2019 |
| Utility: METAL MATERIAL COOLING APPARATUS Filling date: 7 Nov 2025 Issue date: 26 Dec 2019 | 9 Nov 2017 | 26 Dec 2019 |
| Utility: ALUMINUM-BASED ALLOY PLATED STEEL SHEET HAVING EXCELLENT PROCESSING PART CORROSION RESISTANCE Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 22 Dec 2017 | 19 Dec 2019 |
| Utility: HOT DIP ALUMINIZED STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND WORKABILITY, AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 22 Dec 2017 | 19 Dec 2019 |
| Utility: ANNEALING SEPARATOR COMPOSITION FOR ORIENTED ELECTRICAL STEEL SHEET, ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR MANUFACTURING ORIENTED ELECTRICAL STEEL SHEET Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 20 Dec 2017 | 19 Dec 2019 |
| Utility: TEMPERED MARTENSITIC STEEL HAVING LOW YIELD RATIO AND EXCELLLENT UNIFORM ELONGATION, AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 15 Dec 2017 | 19 Dec 2019 |
| Utility: HOT ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY AND FATIGUE PROPERTIES AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 12 Dec 2017 | 19 Dec 2019 |
| Utility: HIGH-HARDNESS WEAR-RESISTANT STEEL AND METHOD FOR MANUFACTURING SAME Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 4 Dec 2017 | 19 Dec 2019 |
| Utility: HEAVY-WALL STEEL PLATE HAVING 450MPA-GRADE TENSILE STRENGTH AND EXCELLENT RESISTANCE TO HYDROGEN INDUCED CRACKING AND METHOD FOR MANUFACTURING SAME Filling date: 7 Nov 2025 Issue date: 19 Dec 2019 | 24 Nov 2017 | 19 Dec 2019 |
| Utility: CATHODE ACTIVE MATERIAL PRECURSOR AND MANUFACTURING METHOD THEREOF, AND CATHODE ACTIVE MATERIAL Filling date: 7 Nov 2025 Issue date: 5 Dec 2019 | 5 Jun 2019 | 5 Dec 2019 |
| Utility: ZINC ALLOY PLATED STEEL HAVING EXCELLENT WELDABILITY AND CORROSION RESISTANCE Filling date: 7 Nov 2025 Issue date: 5 Dec 2019 | 21 Dec 2017 | 5 Dec 2019 |
| Utility: MAGNESIUM ALLOY SHEET AND MANUFACTURING METHOD THEREOF Filling date: 7 Nov 2025 Issue date: 5 Dec 2019 | 12 Dec 2017 | 5 Dec 2019 |
| Utility: ULTRA-HIGH STRENGTH STEEL SHEET HAVING EXCELLENT BENDABILITY AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 5 Dec 2019 | 7 Dec 2017 | 5 Dec 2019 |
| Utility: PRESSURE VESSEL STEEL SHEET HAVING EXCELLENT PWHT RESISTANCE, AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 5 Dec 2019 | 7 Dec 2017 | 5 Dec 2019 |
| Utility: High manganese steel pipe with step-out weld zone erosion-corrosion resistance and method of making the same Filling date: 7 Nov 2025 Issue date: 3 Dec 2019 | 2 May 2017 | 3 Dec 2019 |
| Utility: Field girth welding technology for high manganese steel slurry pipelines Filling date: 7 Nov 2025 Issue date: 3 Dec 2019 | 2 May 2017 | 3 Dec 2019 |
| Utility: Austenitic-based stainless steel for molten carbonate fuel cell Filling date: 7 Nov 2025 Issue date: 3 Dec 2019 | 22 Dec 2015 | 3 Dec 2019 |
| Utility: METHOD FOR COATING ELECTRODE FOR RESISTANCE WELDING, AND ELECTRODE FOR RESISTANCE WELDING Filling date: 7 Nov 2025 Issue date: 28 Nov 2019 | 16 Nov 2017 | 28 Nov 2019 |
| Utility: AUSTENITIC STAINLESS STEEL WITH IMPROVED RESISTANCE TO HYDROGEN BRITTLENESS AND VESSEL FOR HIGH PRESSURE HYDROGEN GAS HAVING THE SAME Filling date: 7 Nov 2025 Issue date: 21 Nov 2019 | 15 May 2017 | 21 Nov 2019 |
| Utility: ZN-MG ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND PLATING ADHESION Filling date: 7 Nov 2025 Issue date: 14 Nov 2019 | 22 Dec 2017 | 14 Nov 2019 |
| Utility: APPARATUS AND METHOD FOR CONTROLLING CONCENTRATION OF OXYGEN IN HEATING FURNACE Filling date: 7 Nov 2025 Issue date: 14 Nov 2019 | 20 Dec 2017 | 14 Nov 2019 |
| Utility: NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME Filling date: 7 Nov 2025 Issue date: 14 Nov 2019 | 20 Dec 2017 | 14 Nov 2019 |
| Utility: LITHIUM METAL ANODE, FABRICATION METHOD THEREROF, AND LITHIUM SECONDARY BATTERY COMPRISING SAME ANODE Filling date: 7 Nov 2025 Issue date: 14 Nov 2019 | 15 Dec 2017 | 14 Nov 2019 |
| Utility: STAINLESS STEEL HAVING EXCELLENT CONTACT RESISTANCE FOR PEMFC SEPARATOR AND METHOD OF MANUFACTURING THE SAME Filling date: 7 Nov 2025 Issue date: 14 Nov 2019 | 30 Nov 2017 | 14 Nov 2019 |
| Utility: Air knife Filling date: 7 Nov 2025 Issue date: 12 Nov 2019 | 3 Jun 2016 | 12 Nov 2019 |
| Utility: Continuous casting and rolling apparatus and method Filling date: 7 Nov 2025 Issue date: 12 Nov 2019 | 2 Dec 2014 | 12 Nov 2019 |
| Utility: HIGH-STRENGTH STEEL SHEET WITH EXCELLENT CRASHWORTHINESS CHARACTERISTICS AND FORMABILITY AND METHOD OF MANUFACTURING THE SAME Filling date: 7 Nov 2025 Issue date: 7 Nov 2019 | 15 Jul 2019 | 7 Nov 2019 |
| Utility: HIGH-STRENGTH STEEL SHEET WITH EXCELLENT CRASHWORTHINESS CHARACTERISTICS AND FORMABILITY AND METHOD OF MANUFACTURING THE SAME Filling date: 7 Nov 2025 Issue date: 7 Nov 2019 | 15 Jul 2019 | 7 Nov 2019 |
| Utility: CATHODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 7 Nov 2025 Issue date: 7 Nov 2019 | 20 Dec 2017 | 7 Nov 2019 |
| Utility: ROLLING ROLL AND PLATED STEEL SHEET PRODUCED THEREBY Filling date: 7 Nov 2025 Issue date: 7 Nov 2019 | 14 Dec 2017 | 7 Nov 2019 |
| Utility: POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 7 Nov 2025 Issue date: 7 Nov 2019 | 8 Dec 2017 | 7 Nov 2019 |
| Utility: Method for increasing coke-oven gas Filling date: 7 Nov 2025 Issue date: 5 Nov 2019 | 4 Oct 2012 | 5 Nov 2019 |
| Utility: Chrome free coating composition having excellent blackening resistance and corrosion resistance, and surface-treated steel sheet Filling date: 7 Nov 2025 Issue date: 29 Oct 2019 | 22 Dec 2015 | 29 Oct 2019 |
| Utility: Fe--Ni alloy metal foil having excellent heat resilience and method for manufacturing same Filling date: 7 Nov 2025 Issue date: 29 Oct 2019 | 25 Mar 2015 | 29 Oct 2019 |
| Utility: HIGH MANGANESE STEEL HAVING SUPERIOR LOW-TEMPERATURE TOUGHNESS AND YIELD STRENGTH AND MANUFACTURING METHOD THEREOF Filling date: 7 Nov 2025 Issue date: 24 Oct 2019 | 21 Dec 2017 | 24 Oct 2019 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 24 Oct 2019 | 21 Dec 2017 | 24 Oct 2019 |
| Utility: ANNEALING SEPARATOR COMPOSITION FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET Filling date: 7 Nov 2025 Issue date: 24 Oct 2019 | 21 Dec 2017 | 24 Oct 2019 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MAGNETIC DOMAIN REFINEMENT METHOD THEREFOR Filling date: 7 Nov 2025 Issue date: 24 Oct 2019 | 20 Dec 2017 | 24 Oct 2019 |
| Utility: HOT ROLLED STEEL PLATE FOR ELECTRIC RESISTANCE WELDED STEEL PIPE HAVING EXCELLENT WELDABILITY, AND MANUFACTURING METHOD THEREOF Filling date: 7 Nov 2025 Issue date: 24 Oct 2019 | 29 Nov 2017 | 24 Oct 2019 |
| Utility: ZINC-BASED PLATED STEEL MATERIAL HAVING EXCELLENT SEALER ADHESION AND COMPOSITION FOR FORMING POST-TREATMENT FILM Filling date: 7 Nov 2025 Issue date: 17 Oct 2019 | 22 Dec 2017 | 17 Oct 2019 |
