Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9083521 | System and method of an in-band modem for data communications over digital wireless communication networks | Christian Sgraja, Marc W. Werner, Christian Pietsch, Wolfgang Granzow, Christoph Arnold Joetten +1 more | 2015-07-14 |
| 8743864 | System and method for supporting higher-layer protocol messaging in an in-band modem | Christian Pietsch, Christian Sgraja, Christoph Arnold Joetten, Marc W. Werner, Wolfgang Granzow | 2014-06-03 |
| 7352868 | Method and apparatus for security in a data processing system | Philip Michael Hawkes, Gregory G. Rose | 2008-04-01 |
| 6876636 | Method and system for a multicast service initiation in a communication system | Ragulan Sinnarajah, Jun Wang, Tao Chen | 2005-04-05 |
| 6529527 | Method and apparatus for carrying packetized voice and data in wireless communication networks | Tao Chen, Raymond Hsu | 2003-03-04 |
| 6205339 | Method and apparatus for establishing TDD/TTY service over vocoded channels | Andrew P. DeJaco, Johnny K. John | 2001-03-20 |
| 6075847 | Method and apparatus for detection of fax calls | — | 2000-06-13 |
| 5864763 | Digital wireless telephone system interface for analog telecommunications equipment | Juan Faus, Matthew S. Grob, Johnny K. John | 1999-01-26 |