Inventor

HONG WAN-KI

KR4 patents

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

HONG JIN CROWN CORP LTD

2 patents

US6468644B1Oct 22, 2002

Dual-structure helmet and method of manufacturing the same

HONG JIN CROWN CORP LTD16 citations88

US6676884B2Jan 13, 2004

Dual-structure helmet and method of manufacturing the same

HONG JIN CROWN CORP LTD9 citations69

HJC CO LTD

1 patent

US6598238B2Jul 29, 2003

Jaw protecting apparatus of helmet

HJC CO LTD24 citations91

(unassigned)

1 patent

US6120208ASep 19, 2000

Prefabrication type high level road structure and construction method thereof

8 citations68