William D. Castagna
5Patents
4h-index
2Co-inventors
43Inventor score
Filing activity: May 26, 1987 → Feb 2, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6442245B1 | System and method for providing voice messaging services utilizing a network connection | Electricity | 37 | Expired |
| US6266400A | Method for customizing and managing information in a voice mail system to facilitate call handling | Electricity | 35 | Expired |
| US6961410B1 | Method for customizing information for interacting with a voice mail system | Electricity | 33 | Expired |
| US6546084B1 | Voice mail system and method with subscriber selection of agent personalities telephone user interface address book and time zone awareness | Electricity | 6 | Expired |
| USD309596S | Watercraft | General | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.