| Utility: COLD-ROLLED STEEL SHEET WITH EXCELLENT FORMABILITY, GALVANIZED STEEL SHEET, AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 18 Jun 2020 | 24 Jul 2019 | 18 Jun 2020 |
| 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: 18 Jun 2020 | 31 May 2018 | 18 Jun 2020 |
| Utility: Magnesium Alloy Plate and Method for Manufacturing Same Filling date: 6 Sep 2025 Issue date: 18 Jun 2020 | 21 Dec 2017 | 18 Jun 2020 |
| Utility: FERRITIC STAINLESS STEEL HAVING EXCELLENT STRENGTH AND CORROSION RESISTANCE TO ACID AND METHOD OF MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 18 Jun 2020 | 4 Dec 2017 | 18 Jun 2020 |
| Utility: HIGH STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT YIELD STRENGTH, DUCTILITY, AND HOLE EXPANDABILITY, HOT-DIP GALVANIZED STEEL SHEET, AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 18 Jun 2020 | 29 Nov 2017 | 18 Jun 2020 |
| Utility: ALLOY-COATED STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 11 Jun 2020 | 13 Feb 2020 | 11 Jun 2020 |
| Utility: Apparatus and method for detecting inner defects of steel plate Filling date: 6 Sep 2025 Issue date: 9 Jun 2020 | 23 Dec 2013 | 9 Jun 2020 |
| Utility: Adhesive laminate core manufacturing apparatus Filling date: 6 Sep 2025 Issue date: 2 Jun 2020 | 11 Aug 2016 | 2 Jun 2020 |
| Utility: Laminate unit for manufacturing bonded-type laminated core member and apparatus having the same for manufacturing laminated core member Filling date: 6 Sep 2025 Issue date: 26 May 2020 | 31 Mar 2015 | 26 May 2020 |
| Utility: ZINC ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT WELDABILITY AND PROCESSED-PART CORROSION RESISTANCE AND METHOD OF MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 27 Jan 2020 | 21 May 2020 |
| Utility: PATTERN-GLASS AND SOLAR LIGHT POWER GENERATING MODULE COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 17 Aug 2018 | 21 May 2020 |
| 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: 21 May 2020 | 6 Jul 2018 | 21 May 2020 |
| Utility: HOT ROLLED STEEL SHEET HAVING EXCELLENT STRENGTH AND ELONGATION AND MANUFACTURING METHOD Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 12 Apr 2018 | 21 May 2020 |
| Utility: Hot press formed article having good anti-delamination, and preparation method for same Filling date: 6 Sep 2025 Issue date: 19 May 2020 | 5 Apr 2016 | 19 May 2020 |
| Utility: Apparatus for removing top dross of plating pot Filling date: 6 Sep 2025 Issue date: 19 May 2020 | 21 Dec 2015 | 19 May 2020 |
| Utility: Austenitic steel having excellent machinability and ultra-low temperature toughness in weld heat-affected zone, and method of manufacturing the same Filling date: 6 Sep 2025 Issue date: 19 May 2020 | 27 Dec 2012 | 19 May 2020 |
| Utility: COLD ROLLED STEEL SHEET FOR FLUX-CORED WIRE, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 14 May 2020 | 5 Jul 2018 | 14 May 2020 |
| Utility: Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 12 May 2020 | 4 Dec 2014 | 12 May 2020 |
| Utility: STEEL SHEET HAVING EXCELLENT RESISTANCE TO LIQUID METAL EMBRITTLEMENT CRACKS AND METHOD FOR MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 7 May 2020 | 22 Jun 2018 | 7 May 2020 |
| Utility: AUSTENITIC STEEL MATERIAL HAVING EXCELLENT ABRASION RESISTANCE AND TOUGHNESS AND MANUFACTURING METHOD THE SAME Filling date: 6 Sep 2025 Issue date: 7 May 2020 | 21 Dec 2017 | 7 May 2020 |
| Utility: PREPARATION METHOD OF LITHIUM-TITANIUM COMPLEX OXIDE ACCORDING TO PARTICLE SIZE CONTROL OF SLURRY THROUGH WET-MILLING Filling date: 6 Sep 2025 Issue date: 7 May 2020 | 26 May 2017 | 7 May 2020 |
| Utility: Hot press formed article having excellent delamination resistance and method for manufacturing the same Filling date: 6 Sep 2025 Issue date: 5 May 2020 | 29 Aug 2016 | 5 May 2020 |
| Utility: Non-oriented electrical steel sheet and manufacturing method therefor Filling date: 6 Sep 2025 Issue date: 5 May 2020 | 5 Dec 2014 | 5 May 2020 |
| Utility: Plated steel sheet for hot press forming having excellent weldability and corrosion resistance, forming member, and manufacturing method thereof Filling date: 6 Sep 2025 Issue date: 21 Apr 2020 | 28 Dec 2018 | 21 Apr 2020 |
| Utility: High specific strength steel sheet and method for manufacturing same Filling date: 6 Sep 2025 Issue date: 21 Apr 2020 | 26 Dec 2013 | 21 Apr 2020 |
| Utility: BRAKE DISC AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 16 Apr 2020 | 13 Dec 2017 | 16 Apr 2020 |
| Utility: Steel sheet coated with aluminum-magnesium Filling date: 6 Sep 2025 Issue date: 14 Apr 2020 | 22 May 2017 | 14 Apr 2020 |
| Utility: Dual metal cyanide catalyst, preparation method therefor, and method for preparing polycarbonate polyol by using catalyst Filling date: 6 Sep 2025 Issue date: 14 Apr 2020 | 21 Dec 2016 | 14 Apr 2020 |
| Utility: Dimension measuring device and method Filling date: 6 Sep 2025 Issue date: 14 Apr 2020 | 25 May 2016 | 14 Apr 2020 |
| 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: 9 Apr 2020 | 31 May 2018 | 9 Apr 2020 |
| Utility: ULTRA-THICK STEEL MATERIAL HAVING EXCELLENT SURFACE PART NRL-DWT PROPERTIES AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 9 Apr 2020 | 20 Dec 2017 | 9 Apr 2020 |
| Utility: STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT PAINTING ADHESION AND POST-PAINTING CORROSION RESISTANCE, AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 2 Apr 2020 | 31 May 2018 | 2 Apr 2020 |
| Utility: POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Filling date: 6 Sep 2025 Issue date: 2 Apr 2020 | 7 Dec 2017 | 2 Apr 2020 |
| Utility: Method of continuously annealing a strip Filling date: 6 Sep 2025 Issue date: 31 Mar 2020 | 30 May 2019 | 31 Mar 2020 |
| Utility: High-strength steel plate for pressure vessel having excellent toughness after post weld heat treatment and manufacturing method thereof Filling date: 6 Sep 2025 Issue date: 31 Mar 2020 | 1 Dec 2015 | 31 Mar 2020 |
| Utility: METHOD FOR PREPARING CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND APPARATUS FOR PREPARING CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 22 Dec 2017 | 26 Mar 2020 |
| Utility: APPARATUS FOR MEASURING CRYSTAL GRAIN SIZE OF STEEL SHEET Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 22 Dec 2017 | 26 Mar 2020 |
| Utility: ANNEALING SEPARATOR COMPOSITION FOR ORIENTED ELECTRICAL STEEL SHEET, ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR MANUFACTURING ORIENTED ELECTRICAL STEEL SHEET Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 20 Dec 2017 | 26 Mar 2020 |
| Utility: NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 19 Dec 2017 | 26 Mar 2020 |
| Utility: STEEL FOR PRESSURE VESSELS HAVING EXCELLENT RESISTANCE TO HYDROGEN INDUCED CRACKING AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 15 Dec 2017 | 26 Mar 2020 |
| Utility: GOLD-COLORED STEEL SHEET AND MANUFACTURING METHOD THEREOF Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 15 May 2017 | 26 Mar 2020 |
| Utility: Method of preparing core-shell particles Filling date: 6 Sep 2025 Issue date: 24 Mar 2020 | 26 Jul 2018 | 24 Mar 2020 |
| Utility: HIGH MANGANESE STEEL PIPE WITH STEP-OUT WELD ZONE EROSION-CORROSION RESISTANCE AND METHOD OF MAKING THE SAME Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 4 Nov 2019 | 19 Mar 2020 |
| Utility: Field Girth Welding Technology for High Manganese Steel Slurry Pipelines Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 31 Oct 2019 | 19 Mar 2020 |
| Utility: ZN-NI ELECTROPLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND FORMABILITY AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 22 Dec 2017 | 19 Mar 2020 |
| Utility: HIGH-STRENGTH STEEL MATERIAL HAVING ENHANCED RESISTANCE TO CRACK INITIATION AND PROPAGATION AT LOW TEMPERATURE AND METHOD FOR MANUFACTURING THE SAME Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 22 Dec 2017 | 19 Mar 2020 |
| Utility: ADHESIVE COATING COMPOSITION FOR NON-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 22 Dec 2017 | 19 Mar 2020 |
| Utility: MAGNESIUM ALLOY SHEET AND METHOD FOR MANUFACTURING SAME Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 21 Dec 2017 | 19 Mar 2020 |
| Utility: STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE IN DEW CONDENSATION ENVIRONMENT CONTAINING SULFIDE AND METHOD FOR PRODUCING SAME Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 21 Dec 2017 | 19 Mar 2020 |
| Utility: ELECTRICAL STEEL SHEET ADHESIVE COATING COMPOSITION, ELECTRICAL STEEL SHEET PRODUCT, AND MANUFACTURING METHOD THEREFOR Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 21 Dec 2017 | 19 Mar 2020 |
