Inventor

KANG CHEOL-HYUN

KR2 patents

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

KT FREETEL CO LTD

1 patent

US7043238B2May 9, 2006

CDMA terminal for providing roaming service to GSM service subscriber in CDMA service area

KT FREETEL CO LTD22 citations86

KOREA TELECOM FREETEL CO LTD

1 patent

US6681111B2Jan 20, 2004

Roaming service system for GSM service subscriber in CDMA service area, and method for registering locations and transmitting and receiving signals and short messages using the system

KOREA TELECOM FREETEL CO LTD47 citations86