VMX, Inc.
🏢 View company profile →15Patents
0Active
15Granted
33Portfolio score
Filing activity: Sep 29, 1982 → May 7, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5717742A | Electronic mail system having integrated voice messages | Electricity | 271 | Expired |
| US4602129A | Electronic audio communications system with versatile message delivery | Electricity | 235 | Expired |
| US4757525A | Electronic audio communications system with voice command features | Electricity | 235 | Expired |
| US4652700A | Electronic audio communications system with versatile user accessibility | Electricity | 138 | Expired |
| US4585906A | Electronic audio communication system with user controlled message address | Electricity | 132 | Expired |
| US4580012A | Electronic audio communications system with automatic user access features | Electricity | 125 | Expired |
| US4761807A | Electronic audio communications system with voice authentication features | Electricity | 113 | Expired |
| US4640991A | Electronic audio communications systems network | Electricity | 83 | Expired |
| US5355406A | Integrated application controlled call processing and messaging system | Electricity | 72 | Expired |
| US5517556A | Call processing system with facsimile processing | Electricity | 63 | Expired |
| US4581486A | Electronic audio communications system with user accessible message groups | Electricity | 57 | Expired |
| US5319703A | Apparatus and method for identifying speech and call-progression signals | Electricity | 47 | Expired |
| US5321745A | Adaptive efficient single/dual tone decoder apparatus and method for identifying call-progression signals | Electricity | 44 | Expired |
| US4580016A | Method and apparatus for checking the integrity of a communications channel in a voice store and forward system | Electricity | 35 | Expired |
| US5325422A | PBX telephone call control system | Electricity | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.