Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6785553 | Position location of multiple transponding platforms and users using two-way ranging as a calibration reference for GPS | Kar W. Yung, David C. H. Cheng, Ming U. Chang, Frank A. Hagen | 2004-08-31 |
| 6763242 | Resource assignment system and method for determining the same | Ying Feria, Ming U. Chang, Frank A. Hagen, Alan Cha | 2004-07-13 |
| 6756937 | Stratospheric platforms based mobile communications architecture | Ming U. Chang, Ying Feria, Weizheng Wang, Alan Cha, Kar W. Yung +1 more | 2004-06-29 |
| 6757546 | Synchronization method and apparatus for multi-platform communication system | Frank A. Hagen, Kar W. Yung, Ying Feria | 2004-06-29 |
| 6751458 | Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions | Weizheng Wang, Ming U. Chang, Ying Feria, Alan Cha | 2004-06-15 |
| 5304486 | Method of and apparatus for cell portion and cell fusion using radiofrequency electrical pulse | — | 1994-04-19 |
| 4970154 | Method for inserting foreign genes into cells using pulsed radiofrequency | — | 1990-11-13 |
| 4822470 | Method of and apparatus for cell poration and cell fusion using radiofrequency electrical pulses | — | 1989-04-18 |