Assignee

DUAN HAIFENG

CN2 patents

Top patents by PatentIndex Score

US8326262B2Dec 4, 2012

Advice of charging method, system and mobile terminal

DUAN HAIFENG5 citations57

US8649761B2Feb 11, 2014

Service charging method, service charging system, network access server and protocol resolving device

DUAN HAIFENG0 citations35