Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829473 | Roaming and hand-off support for prepaid billing for wireless data networks | Sundar Raman, Michael Borella | 2004-12-07 |
| 6795705 | Hot standby protocol for wireless devices | Yingchun Xu, Narothum Saxena | 2004-09-21 |
| 6707809 | Method for forwarding data to idle mobile nodes, and home agent control node for use in the method | Yingchun Xu, Dale Eliason | 2004-03-16 |
| 6684256 | Routing method for mobile wireless nodes having overlapping internet protocol home addresses | Yingchun Xu | 2004-01-27 |