| Utility: Micro-grid system with un-interruptible power supply Filling date: 6 Sep 2025 Issue date: 27 Sep 2022 | 11 Dec 2019 | 27 Sep 2022 |
| Utility: Wire rod for cold heading, processed product using same, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 13 Sep 2022 | 10 Oct 2018 | 13 Sep 2022 |
| Utility: Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 13 Sep 2022 | 26 Sep 2017 | 13 Sep 2022 |
| Utility: Method for producing alloy steel Filling date: 6 Sep 2025 Issue date: 13 Sep 2022 | 16 Dec 2016 | 13 Sep 2022 |
| Utility: Low-temperature steel plate having excellent impact toughness, and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 6 Sep 2022 | 26 Jun 2018 | 6 Sep 2022 |
| Utility: PLATING STEEL SHEET FOR HOT PRESS FORMING, FORMING MEMBER USING SAME, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 1 Sep 2022 | 16 May 2022 | 1 Sep 2022 |
| Utility: SEAT FRAME Filling date: 6 Sep 2025 Issue date: 1 Sep 2022 | 28 May 2020 | 1 Sep 2022 |
| Utility: AUSTENITIC STAINLESS STEEL HAVING IMPROVED STRENGTH, AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 25 Aug 2022 | 10 Jun 2020 | 25 Aug 2022 |
| Utility: Composite material steel sheet Filling date: 6 Sep 2025 Issue date: 23 Aug 2022 | 6 Dec 2018 | 23 Aug 2022 |
| Utility: Steel sheet with excellent bake hardening properties and plating adhesion and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 23 Aug 2022 | 30 Nov 2018 | 23 Aug 2022 |
| Utility: Ultra high strength hot rolled steel sheet having low deviation of mechanical property and excellent surface quality, and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 23 Aug 2022 | 6 Jul 2018 | 23 Aug 2022 |
| Utility: High strength steel sheet having excellent formability and manufacturing method thereof Filling date: 6 Sep 2025 Issue date: 23 Aug 2022 | 4 Aug 2017 | 23 Aug 2022 |
| Utility: Austenite-based molten aluminum-plated steel sheet having excellent properties of plating and weldability Filling date: 6 Sep 2025 Issue date: 23 Aug 2022 | 22 Dec 2016 | 23 Aug 2022 |
| Utility: SOLUTION COMPOSITION FOR STEEL SHEET SURFACE TREATMENT, ZINC-BASED PLATED STEEL SHEET SURFACE-TREATED WITH SAME, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 18 Aug 2022 | 28 Apr 2022 | 18 Aug 2022 |
| Utility: CHROMIUM STEEL SHEET HAVING EXCELLENT CREEP STRENGTH AND HIGH TEMPERATURE DUCTILITY AND METHOD OF MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 18 Aug 2022 | 25 Aug 2020 | 18 Aug 2022 |
| Utility: HIGH-STRENGTH STEEL SHEET AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 18 Aug 2022 | 20 Jul 2020 | 18 Aug 2022 |
| Utility: CASTING EQUIPMENT AND CASTING METHOD Filling date: 6 Sep 2025 Issue date: 18 Aug 2022 | 1 Jul 2020 | 18 Aug 2022 |
| Utility: Multilayered zinc alloy plated steel material having excellent spot weldability and corrosion resistance Filling date: 6 Sep 2025 Issue date: 16 Aug 2022 | 13 Dec 2018 | 16 Aug 2022 |
| Utility: Ferritic stainless steel for automotive exhaust system with improved heat resistance and condensate corrosion resistance, and method for manufacturing the same Filling date: 6 Sep 2025 Issue date: 16 Aug 2022 | 27 Nov 2017 | 16 Aug 2022 |
| 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: 11 Aug 2022 | 25 Apr 2022 | 11 Aug 2022 |
| Utility: WIRE ROD AND STEEL WIRE FOR HIGH STRENGTH SPRING, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 11 Aug 2022 | 22 Jun 2020 | 11 Aug 2022 |
| Utility: Non-oriented electrical steel sheet and method for producing same Filling date: 6 Sep 2025 Issue date: 9 Aug 2022 | 16 May 2018 | 9 Aug 2022 |
| Utility: WHEEL DISC AND METHOD OF MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 4 Aug 2022 | 16 Sep 2020 | 4 Aug 2022 |
| Utility: High-hardness wear-resistant steel and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 2 Aug 2022 | 4 Dec 2017 | 2 Aug 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: 28 Jul 2022 | 15 Apr 2022 | 28 Jul 2022 |
| Utility: NON-HEAT TREATED WIRE ROD WITH EXCELLENT WIRE DRAWABILITY AND IMPACT TOUGHNESS AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 28 Jul 2022 | 24 Feb 2020 | 28 Jul 2022 |
| Utility: WIRE ROD FOR GRAPHITIZATION HEAT TREATMENT, GRAPHITE STEEL, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 28 Jul 2022 | 22 Jan 2020 | 28 Jul 2022 |
| Utility: Manufacturing method of surface-treated zinc-nickel alloy electroplated steel sheet having excellent corrosion resistivity and paintability Filling date: 6 Sep 2025 Issue date: 26 Jul 2022 | 28 Jun 2019 | 26 Jul 2022 |
| Utility: Steel material for low yield ratio, high-strength steel pipe having excellent low-temperature toughness, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 26 Jul 2022 | 18 Dec 2018 | 26 Jul 2022 |
| Utility: Alloy-plated steel material having excellent corrosion resistance and high surface quality Filling date: 6 Sep 2025 Issue date: 26 Jul 2022 | 22 Dec 2017 | 26 Jul 2022 |
| Utility: Stainless steel for separation plate of polymer electrolyte membrane fuel cell having improved hydrophilic property and corrosion resistance, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 26 Jul 2022 | 16 Dec 2016 | 26 Jul 2022 |
| Utility: SCR CATALYST HAVING EXCELLENT SULFUR TOLERANCE Filling date: 6 Sep 2025 Issue date: 21 Jul 2022 | 28 Sep 2020 | 21 Jul 2022 |
| Utility: ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 21 Jul 2022 | 26 Jun 2020 | 21 Jul 2022 |
| Utility: AUSTENITIC STAINLESS STEEL WITH EXCELLENT CORROSION RESISTANCE OF WELDED PART Filling date: 6 Sep 2025 Issue date: 21 Jul 2022 | 29 May 2020 | 21 Jul 2022 |
| Utility: Surface-treated metallic material with easy control of glossiness and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 12 Jul 2022 | 23 Nov 2016 | 12 Jul 2022 |
| Utility: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MAGNETIC DOMAIN REFINEMENT METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 7 Jul 2022 | 28 Mar 2022 | 7 Jul 2022 |
| Utility: Clad steel plate having excellent strength and formability, and production method therefor Filling date: 6 Sep 2025 Issue date: 5 Jul 2022 | 23 Jun 2017 | 5 Jul 2022 |
| Utility: Wear-resistant steel having excellent hardness and impact toughness, and method for producing same Filling date: 6 Sep 2025 Issue date: 28 Jun 2022 | 21 Dec 2018 | 28 Jun 2022 |
| Utility: Method for preparing porous carbon material by using coal tar generated in COG process Filling date: 6 Sep 2025 Issue date: 28 Jun 2022 | 2 Oct 2018 | 28 Jun 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: 23 Jun 2022 | 15 Mar 2022 | 23 Jun 2022 |
| Utility: ULTRA-HIGH STRENGTH STEEL SHEET HAVING EXCELLENT SHEAR WORKABILITY AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 16 Jun 2022 | 21 Apr 2020 | 16 Jun 2022 |
| Utility: Plating steel sheet for hot press forming, forming member using same, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 14 Jun 2022 | 21 Dec 2018 | 14 Jun 2022 |
| Utility: Roll stamping apparatus and method Filling date: 6 Sep 2025 Issue date: 14 Jun 2022 | 21 Dec 2016 | 14 Jun 2022 |
| Utility: CATHODE ADDITIVE FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, CATHODE FOR LITHIUM SECONDARY BATTERY, COMPRISING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 9 Jun 2022 | 12 Nov 2019 | 9 Jun 2022 |
| Utility: High-strength steel sheet with excellent crashworthiness characteristics and formability and method of manufacturing the same Filling date: 6 Sep 2025 Issue date: 31 May 2022 | 15 Jul 2019 | 31 May 2022 |
| Utility: High-strength steel sheet with excellent crashworthiness characteristics and formability and method of manufacturing the same Filling date: 6 Sep 2025 Issue date: 31 May 2022 | 15 Jul 2019 | 31 May 2022 |
| Utility: Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 31 May 2022 | 14 Jun 2017 | 31 May 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: 26 May 2022 | 8 Feb 2022 | 26 May 2022 |
| Utility: Hot-dip galvanized steel sheet having excellent low-temperature adhesion and workability Filling date: 6 Sep 2025 Issue date: 24 May 2022 | 20 Dec 2018 | 24 May 2022 |
| Utility: Ferritic stainless steel having excellent high-temperature oxidation resistance, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 24 May 2022 | 6 Sep 2018 | 24 May 2022 |
