Casio PhoneMate, Inc.
18Patents
0Active
18Granted
34Portfolio score
Filing activity: Nov 24, 1992 → Sep 19, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5907596A | Calling party identification device with message function | Electricity | 100 | Expired |
| US5646979A | Cordless telephone with voice announced calling party identification | Electricity | 72 | Expired |
| US5577104A | Method for system and message activation based on distinctive ringing | Electricity | 59 | Expired |
| US5781613A | Telephone answering device and method for screening incoming telephone calls with blocked calling party identification information | Electricity | 27 | Expired |
| US5692042A | Speakerphone controlled by a comparator with hysteresis | Electricity | 26 | Expired |
| US5761271A | Telephone answering device with improved pager access feature | Electricity | 24 | Expired |
| US5826187A | Integrated cordless telephone with telephone answering device and method of replaying messages through a handset thereof | Electricity | 24 | Expired |
| US5768349A | Voice mail telephone answering device | Electricity | 22 | Expired |
| US5768364A | Software speakerphone system and method of operating a speakerphone | Electricity | 17 | Expired |
| US5680075A | Digital automatic gain control | Electricity | 14 | Expired |
| US5825648A | Backup system for a time of day clock in an electronic device | Electricity | 13 | Expired |
| USD404732S | Telephone with display | General | 12 | Expired |
| US5699421A | Telephone answering device with low cost dual tone multi-frequency detector | Electricity | 8 | Expired |
| US5526424A | Electronic notepad | Electricity | 8 | Expired |
| US6009165A | Full duplex speakerphone system | Electricity | 7 | Expired |
| US5588046A | Digital telephone answering device and method of testing message storage memory therein | Electricity | 6 | Expired |
| US5991632A | Cordless telephone and method of synchronization for secure, high-speed, high-volume data transfer | Electricity | 5 | Expired |
| US5606598A | Telephone answering device with direct telephone line interface | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.