Assignee
CHENG YIHUA
CN·2 granted patents·8 citations·filing 2007–2010
Top patents by PatentIndex Score
2 records- 0170US8131265B2System and method for implementing multimedia ring back tone serviceCHENG YIHUA·Filed 2007·Granted Mar 6, 2012·6 cites·26 claims
- 0261US8249588B2Method, network device, and network system for implementing voice call continuity serviceCHENG YIHUA·Filed 2010·Granted Aug 21, 2012·2 cites·12 claims
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