Inventor

JUNG UOO CHANG

KR4 patents

⚠️ This page may combine multiple inventors who share the name “JUNG UOO CHANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PO HANG IRON & STEEL

3 patents

US6110413AAug 29, 2000

3-Stage fluidized bed type fine iron ore reducing apparatus having x-shaped circulating tubes

PO HANG IRON & STEEL26 citations89

US6235079B1May 22, 2001

Two step twin-single fluidized bed pre-reduction apparatus for pre-reducing fine iron ore, and method therefor

PO HANG IRON & STEEL8 citations70

US6491738B1Dec 10, 2002

2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatus

PO HANG IRON & STEEL3 citations60

KOREA INST IND TECH

1 patent

US10697054B2Jun 30, 2020

Low temperature carburizing method and carburizing apparatus

KOREA INST IND TECH0 citations37