eFusion, Inc.
5Patents
0Active
5Granted
32Portfolio score
Filing activity: Mar 14, 1997 → Aug 6, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5889774A | Method and apparatus for selecting an internet/PSTN changeover server for a packet based phone call | Electricity | 306 | Expired |
| US6026087A | Method and apparatus for establishing a voice call to a PSTN extension for a networked client computer | Emerging Cross-Sectional Technologies | 241 | Expired |
| US6144670A | Method and apparatus for establishing and facilitating a voice call connection from a client computer to a PSTN extension | Electricity | 145 | Expired |
| US5987102A | Method and apparatus for bridging a voice call including selective provision of information in non-audio to the caller | Electricity | 109 | Expired |
| US6199096A | Method and apparatus for synchronizing information browsing among multiple systems | Electricity | 98 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.