Joel Hanson
12Patents
7h-index
10Co-inventors
55Inventor score
Filing activity: Sep 20, 1999 → Jun 5, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6868074B1 | Mobile data device and method of locating mobile data device | Physics | 338 | Expired |
| US6351464B1 | Virtual second line hybrid network communication system | Emerging Cross-Sectional Technologies | 125 | Expired |
| US6697474B1 | Systems and methods for receiving telephone calls via instant messaging | Electricity | 109 | Expired |
| US7317705B2 | Mobile data device and method of locating mobile data service | Physics | 101 | Expired |
| US6393017B1 | Virtual PBX system | Electricity | 67 | Expired |
| US6535585B1 | System and method for notification upon successful message delivery | Electricity | 48 | Expired |
| US6775272B2 | Virtual PBX system | Electricity | 18 | Expired |
| US7274778B2 | Systems and methods for receiving telephone calls via instant messaging | Electricity | 6 | Expired |
| US7496091B2 | Virtual PBX system | Electricity | 5 | Active |
| US6766001B1 | Process and apparatus for messaging upon incomplete call | Electricity | 4 | Expired |
| US6724754B2 | Virtual PBX system | General | 0 | Revoked |
| US8553857B2 | Systems and methods for receiving telephone calls via instant messaging | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.