DC

Donald C. D. Chang

DI Directv: 9 patents #1 of 68Top 2%
📍 Thousand Oaks, CA: #1 of 147 inventorsTop 1%
🗺 California: #191 of 26,868 inventorsTop 1%
Overall (2005): #1,563 of 245,428Top 1%
9
Patents 2005

Issued Patents 2005

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6963548 Coherent synchronization of code division multiple access signals Kar W. Yung, David C. H. Cheng, Frank A. Hagen, Ming U. Chang, John I. Novak, III 2005-11-08
6952580 Multiple link internet protocol mobile communications system and method therefor Wah L. Lim, Ming U. Chang 2005-10-04
6941138 Concurrent communications between a user terminal and multiple stratospheric transponder platforms Alan Cha 2005-09-06
6920309 User positioning technique for multi-platform communication system Kar W. Yung, Frank A. Hagen 2005-07-19
6914557 Micro cell architecture for mobile user tracking communication system Ying Feria, Weizheng Wang, Alan Cha, Ming U. Chang, Frank A. Hagen +1 more 2005-07-05
6909875 Multi-platform wireless communication system for a variety of different user types Kar W. Yung, Frank A. Hagen 2005-06-21
6895217 Stratospheric-based communication system for mobile users having adaptive interference rejection Alan Cha 2005-05-17
6888499 Signal processing circuit for communicating with a modular mobile terminal and method therefor Urban A. Von Der Embse, Kar W. Yung, John I. Novak, III 2005-05-03
6868269 Integrating coverage areas of multiple transponder platforms Frank A. Hagen, Ying Feria, Kar W. Yung, Weizheng Wang 2005-03-15