Issued Patents 2005
Showing 1–3 of 3 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 |