Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12194560 | Method for preventing spot welding crack of galvanized steel plate | — | 2025-01-14 |
| 12180571 | High-strength cold rolled steel sheet and galvannealed steel sheet having excellent burring property, and manufacturing method therefor | Hang-Sik Cho | 2024-12-31 |
| 11753693 | High-strength cold rolled steel sheet having high hole expansion ratio, highstrength hot-dip galvanized steel sheet, and manufacturing methods therefor | Young-Roc IM, Jong Chan Park, Min-Seo KOO | 2023-09-12 |
| 11091818 | High strength cold-rolled steel sheet and hot-dip galvanized steel sheet having excellent hole expansion, ductility and surface treatment properties, and method for manufacturing same | Hang-Sik Cho, Dong-Seoug Sin | 2021-08-17 |
| 10604820 | Method of continuously annealing a strip | Kyoo-Young Lee, Hang-Sik Cho, Joo-Hyun RYU, Man-Young Park | 2020-03-31 |
| 10519526 | High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing same | Kyoo-Young Lee, Joo-Hyun RYU, Dong-Seoug Sin, Se-Don Choo | 2019-12-31 |
| 10358691 | Apparatus for continuous annealing of strip and method for continuous annealing of same | Kyoo-Young Lee, Hang-Sik Cho, Joo-Hyun RYU, Man-Young Park | 2019-07-23 |
| 10273556 | Lightweight steel sheet having excellent strength and ductility and method for manufacturing same | Min-Seo KOO, Dong-Seoug Sin | 2019-04-30 |
| 9856542 | Ferritic lightweight high-strength steel sheet having excellent stiffness and ductility, and method of manufacturing the same | Kyoo-Young Lee, Kwang-Geun Chin | 2018-01-02 |
| 9738958 | Austenitic, lightweight, high-strength steel sheet having high yield ratio and ductility, and method for producing the same | Kwang-Geun Chin, Sang-Ho Han | 2017-08-22 |
| 9598753 | High strength thin steel sheet for the superior press formability and surface quality and galvanized steel sheet and method for manufacturing the same | Kwang-Geun Chin | 2017-03-21 |
| 9194030 | High strength thin steel sheet for the superior press formability and surface quality and galvanized steel sheet and method for manufacturing the same | Kwang-Geun Chin | 2015-11-24 |
| 9109273 | High strength steel sheet and hot dip galvanized steel sheet having high ductility and excellent delayed fracture resistance and method for manufacturing the same | Young Hoon Jin, Kwang-Geun Chin, Seung-bok LEE | 2015-08-18 |
| 8778097 | Low specific gravity and high strength steel sheets with excellent ridging resistibility and manufacturing methods thereof | Kwang-Geun Chin | 2014-07-15 |
| 8741078 | Method for manufacturing an ultrahigh strength hot dip galvanized steel sheet having martensitic structure as matrix | Tae-Jin Song, Han-Soo Kim, Bruno C. De Cooman | 2014-06-03 |