Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12330391 | Steel sheet plated with Al—Fe for hot press forming having excellent corrosion resistance and spot weldability, and manufacturing method thereof | Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim | 2025-06-17 |
| 12258657 | Hot-rolled steel sheet having excellent impact resistance, steel pipe, member, and manufacturing methods therefor | Hwan-Goo Seong, Seong-Beom Bae | 2025-03-25 |
| 12123094 | Aluminum-based plated steel plate for hot press having excellent resistance against hydrogen delayed fracture and spot weldability, and method for manufacturing same | Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim | 2024-10-22 |
| 12049678 | Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof | Seong-Woo Kim, Jin-Keun Oh | 2024-07-30 |
| 12049679 | Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same | Jin-Keun Oh, A-Ra CHO, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo +1 more | 2024-07-30 |
| 11952652 | Zinc-plated steel sheet for hot pressing having outstanding surface characteristics, hot-pressed moulded parts obtained using the same, and a production method for the same | Il-Ryoung Sohn, Jong-Sang Kim, Joong-Chul Park, Jin-Keun Oh, Han-Gu Cho +2 more | 2024-04-09 |
| 11939651 | Al—Fe-alloy plated steel sheet for hot forming, having excellent TWB welding characteristics, hot forming member, and manufacturing methods therefor | Seong-Woo Kim, Jin-Keun Oh, Hyeon-Jeong SHIN | 2024-03-26 |
| 11939639 | Ultra-high-strength hot-rolled steel sheet, steel pipe, member, and manufacturing methods therefor | Hwan-Goo Seong, Seong-Beom Bae | 2024-03-26 |
| 11827947 | Hot press-formed member having excellent crack propagation resistance and ductility, and method for producing same | Jin-Keun Oh, Seong-Woo Kim, Won-Mo BAK | 2023-11-28 |
| 11801664 | Steel sheet for hot press formed member having excellent resistance to hydrogen delayed fracture and method for manufacturing thereof | Seong-Woo Kim, Jin-Keun Oh | 2023-10-31 |
| 11788166 | Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same | Jin-Keun Oh, A-Ra CHO, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo +1 more | 2023-10-17 |
| 11732323 | Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof | Seong-Woo Kim, Jin-Keun Oh | 2023-08-22 |
| 11624100 | Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same | Jin-Keun Oh, A-Ra CHO, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo +1 more | 2023-04-11 |
| 11549167 | Steel sheet plated with Al—Fe alloy for hot press forming having excellent corrosion resistance and heat resistance, hot press formed part, and manufacturing method therefor | Seong-Woo Kim, Jin-Keun Oh, Sang-Heon Kim | 2023-01-10 |
| 11529795 | Steel sheet plated with Al—Fe for hot press forming having excellent corrosion resistance and spot weldability, and manufacturing method thereof | Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim | 2022-12-20 |
| 11491764 | Iron-aluminum-based plated steel sheet for hot press forming, having excellent hydrogen delayed fracture properties and spot welding properties, and manufacturing method therefor | Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim | 2022-11-08 |
| 11441205 | Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same | Jin-Keun Oh, A-Ra CHO, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo +1 more | 2022-09-13 |
| 11338549 | Steel sheet for hot press formed member having excellent resistance to hydrogen delayed fracture and method for manufacturing thereof | Seong-Woo Kim, Jin-Keun Oh | 2022-05-24 |
| 11274357 | Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof | Seong-Woo Kim, Jin-Keun Oh | 2022-03-15 |
| 10934601 | Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof | Seong-Woo Kim, Jin-Keun Oh | 2021-03-02 |
| 10590522 | Aluminum-iron alloy-coated steel sheet for hot press forming, having excellent hydrogen delayed fracture resistance, peeling resistance, and weldability and hot-formed member using same | Jin-Keun Oh, Il-Ryoung Sohn, Yong-Soo Kim | 2020-03-17 |
| 10584396 | Heat treatable steel, product formed thereof having ultra high strength and excellent durability, and method for manufacturing same | Jae-Hoon Lee, Ki Hyun PARK | 2020-03-10 |
| 10533237 | Hot press forming parts having excellent bending properties and method for manufacturing the same | Jin-Keun Oh, Seong-Woo Kim | 2020-01-14 |
| 10253388 | Steel sheet for hot press formed product having superior bendability and ultra-high strength, hot press formed product using same, and method for manufacturing same | Jae-Hoon Lee, Jin-Keun Oh, Sim-Kun Min, Chang-Sig Choi | 2019-04-09 |
| 10151013 | Hot press forming parts having excellent bending properties and method for manufacturing the same | Jin-Keun Oh, Seong-Woo Kim | 2018-12-11 |