Multi-Tech Systems, Inc.
75Patents
6Active
75Granted
38Portfolio score
Filing activity: Aug 14, 1991 → Nov 9, 2018 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5452289A | Computer-based multifunction personal communications system | Emerging Cross-Sectional Technologies | 376 | Expired |
| US5617423A | Voice over data modem with selectable voice compression | Emerging Cross-Sectional Technologies | 180 | Expired |
| US5546395A | Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem | Electricity | 172 | Expired |
| US5471470A | Computer-based multifunction personal communications system | Emerging Cross-Sectional Technologies | 119 | Expired |
| US5812534A | Voice over data conferencing for a computer-based personal communications system | Electricity | 106 | Expired |
| US5546448A | Apparatus and method for a caller ID modem interface | Electricity | 106 | Expired |
| US5453986A | Dual port interface for a computer-based multifunction personal communication system | Electricity | 97 | Expired |
| US5577041A | Method of controlling a personal communication system | Emerging Cross-Sectional Technologies | 93 | Expired |
| US6219708A | System for network resource management | Electricity | 87 | Expired |
| US5309562A | Method and apparatus for establishing protocol spoofing from a modem | Electricity | 85 | Expired |
| US5600649A | Digital simultaneous voice and data modem | Emerging Cross-Sectional Technologies | 83 | Expired |
| US5450425A | Protocol for communication of a data packet | Electricity | 80 | Expired |
| US6091737A | Remote communications server system | Electricity | 74 | Expired |
| US5682386A | Data/voice/fax compression multiplexer | Electricity | 68 | Expired |
| US5355365A | Intelligent local area network modem node | Electricity | 66 | Expired |
| US5500859A | Voice and data transmission system | Emerging Cross-Sectional Technologies | 60 | Expired |
| US5790532A | Voice over video communication system | Emerging Cross-Sectional Technologies | 56 | Expired |
| USD394250S | Icon for a display screen | General | 56 | Expired |
| US5864560A | Method and apparatus for mode switching in a voice over data computer-based personal communications system | Electricity | 56 | Expired |
| US5757801A | Advanced priority statistical multiplexer | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6563821B1 | Channel bonding in a remote communications server system | Electricity | 54 | Expired |
| US5764627A | Method and apparatus for a hands-free speaker phone | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5905794A | Caller identification interface using line reversal detection | Electricity | 51 | Expired |
| US7082141B2 | Computer implemented voice over data communication apparatus and method | Electricity | 42 | Expired |
| US6359894B1 | Remote communications server system | Electricity | 40 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.