Inventor
CHO SOO-HYOUN
KR14 patents
⚠️ This page may combine multiple inventors who share the name “CHO SOO-HYOUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POSCO
6 patentsUS12221702B2Feb 11, 2025
Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same
POSCO0 citations62
US12194491B2Jan 14, 2025
Ternary hot-dip galvannealed steel sheet surface treatment solution composition for providing excellent blackening resistance and alkali resistance, ternary hot-dip galvannealed steel sheet surface-treated using same, and manufacturing method therefor
POSCO0 citations61
US11634818B2Apr 25, 2023
Solution composition containing trivalent chromium for surface treatment of steel sheet, galvanized steel sheet surface—treated with same, and method for manufacturing galvanized
POSCO0 citations61
US11634819B2Apr 25, 2023
Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor
POSCO0 citations61
US11346003B2May 31, 2022
Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor
POSCO0 citations61
US10822705B2Nov 3, 2020
Surface-treatment solution composition containing trivalent chromium and inorganic compound, zinc-based plated steel sheet surface-treated using same, and method for producing same
POSCO1 citations61
PO HANG IRON & STEEL
3 patentsUS6387538B1May 14, 2002
Surface-treated steel sheet for fuel tanks and method of fabricating same
PO HANG IRON & STEEL17 citations79
US6797372B2Sep 28, 2004
Resin-coated steel for fuel tanks of automobile and method for manufacturing the same
PO HANG IRON & STEEL9 citations70
US6565671B1May 20, 2003
Surface-treated steel sheet coated with chromate film for fuel tanks and method of fabricating the same
PO HANG IRON & STEEL7 citations70