Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6914557 | Micro cell architecture for mobile user tracking communication system | Donald C. D. Chang, Weizheng Wang, Alan Cha, Ming U. Chang, Frank A. Hagen +1 more | 2005-07-05 |
| 6891813 | Dynamic cell CDMA code assignment system and method | Ming U. Chang, Donald C. D. Chang | 2005-05-10 |
| 6868269 | Integrating coverage areas of multiple transponder platforms | Frank A. Hagen, Kar W. Yung, Weizheng Wang, Donald C. D. Chang | 2005-03-15 |
| 6829479 | Fixed wireless back haul for mobile communications using stratospheric platforms | Donald C. D. Chang, Ming U. Chang, Harold A. Rosen | 2004-12-07 |
| 6763242 | Resource assignment system and method for determining the same | Ming U. Chang, Donald C. D. Chang, Frank A. Hagen, Alan Cha | 2004-07-13 |
| 6757546 | Synchronization method and apparatus for multi-platform communication system | Frank A. Hagen, Kar W. Yung, Donald C. D. Chang | 2004-06-29 |
| 6756937 | Stratospheric platforms based mobile communications architecture | Donald C. D. Chang, Ming U. Chang, Weizheng Wang, Alan Cha, Kar W. Yung +1 more | 2004-06-29 |
| 6751458 | Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions | Weizheng Wang, Donald C. D. Chang, Ming U. Chang, Alan Cha | 2004-06-15 |
| 6725013 | Communication system having frequency reuse in non-blocking manner | Donald C. D. Chang, Weizheng Wang, Ming U. Chang, Harold A. Rosen, Wah L. Lim | 2004-04-20 |
| 6567052 | Stratospheric platform system architecture with adjustment of antenna boresight angles | Weizheng Wang, Donald C. D. Chang, Ming U. Chang | 2003-05-20 |
| 6388615 | Micro cell architecture for mobile user tracking communication system | Donald C. D. Chang, Weizheng Wang, Alan Cha, Ming U. Chang, Frank A. Hagen +1 more | 2002-05-14 |