Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6380893 | Ground-based, wavefront-projection beamformer for a stratospheric communications platform | Donald C. D. Chang, Kar W. Yung, Weizheng Wang | 2002-04-30 |
| 6337980 | Multiple satellite mobile communications method and apparatus for hand-held terminals | Donald C. D. Chang, John I. Novak, III, Kar W. Yung, Ming U. Chang, William W. Mayfield | 2002-01-08 |
| 6295440 | Multiple satellite mobile communications method and apparatus for hand-held terminals | Donald C. D. Chang, John I. Novak, III, Kar W. Yung, Ming U. Chang, William W. Mayfield | 2001-09-25 |
| 6291988 | Sensor device | Klaus Hinteresch, Arno Laubrock | 2001-09-18 |
| 5142291 | Passive microwave near-field tomographic imaging system and method | Donald C. D. Chang, Joseph G. Gurley, Samuel C. Reynolds, Kar W. Yung | 1992-08-25 |