Yongfeng CAI

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Providing ring back tones in a communication network
- Patent number 8,824,657
- Issue date Sep 2, 2014
- Huawei Technologies Co., LTD.
- Xuanming Lu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
CDMA intelligent network system and its method, device for realizin...
- Patent number 8,060,087
- Issue date Nov 15, 2011
- Huawei Technologies Co., Ltd.
- Xuanming Lu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for providing RBT in communication network
- Patent number 7,889,856
- Issue date Feb 15, 2011
- Huawei Technologies Co., Ltd.
- Bin Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD FOR PROVIDING RBT IN COMMUNICATION NETWORK
- Publication number 20100329442
- Publication date Dec 30, 2010
- Xuanming LU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DEVICE, METHOD AND SYSTEM FOR REALIZING HANGUP NOTIFICATION SERVICE
- Publication number 20100020950
- Publication date Jan 28, 2010
- Huawei Technologies Co., Ltd
- Yaodong Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CDMA INTELLIGENT NETWORK SYSTEM AND ITS METHOD, DEVICE FOR REALIZIN...
- Publication number 20090036122
- Publication date Feb 5, 2009
- Huawei Technologies Co., Ltd
- Xuanming LU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for providing RBT in communication network
- Publication number 20060153355
- Publication date Jul 13, 2006
- Huawei Technologies Co., Ltd
- Bin Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE