Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9364863 | Method for forming an ultrasound transducer array | Stefan Stegmeier, Jörg Zapf | 2016-06-14 |
| 8824657 | Providing ring back tones in a communication network | Xiaodong Zhao, Yongfeng Cai | 2014-09-02 |
| 8277380 | Piezoelectric and CMUT layered ultrasound transducer array | Christopher M. Daft, Paul Wagner | 2012-10-02 |
| 8060087 | CDMA intelligent network system and its method, device for realizing international roaming service | Junrong Xu, Jianjun Ding, Yongfeng Cai, Haifeng Xu, Taiyong Dun | 2011-11-15 |
| 8009809 | Method and system for call proceeding in an intelligent network system | Yongxin Zhong, Wensheng Xu, Huarul Wang, Xiaodong Zhao | 2011-08-30 |
| 7889856 | System and method for providing RBT in communication network | Bin Wang, Yihua Cheng, Xiaoqing Hu, Xiaojun Mo, Jihong Dong +13 more | 2011-02-15 |
| 7769151 | System and method for implementing prepaid data services | Jie Zhang, Yimin Li, Junrong Xu, Xiaodong Zhao | 2010-08-03 |