Assignee
TELLABS INC
20 granted patents·623 citations·filing 1977–1998
Top patents by PatentIndex Score
20 records- 0189US5274705ANonlinear processor for an echo canceller and methodTELLABS INC·Filed 1991·Granted Dec 28, 1993·114 cites·30 claims
- 0287USD288753SEquipment cabinetTELLABS INC·Filed 1984·Granted Mar 17, 1987·25 cites·1 claims
- 0385USD288751SEquipment cabinetTELLABS INC·Filed 1984·Granted Mar 17, 1987·22 cites·1 claims
- 0483US4283604ACurrent source circuits with common mode noise rejectionTELLABS INC·Filed 1979·Granted Aug 11, 1981·24 cites·26 claims
- 0581US4918727ADouble talk detector for echo canceller and methodTELLABS INC·Filed 1988·Granted Apr 17, 1990·65 cites·52 claims
- 0678US4498123AUniversal circuit module mounting structureTELLABS INC·Filed 1983·Granted Feb 5, 1985·38 cites·6 claims
- 0777US6442272B1Voice conferencing system having local sound amplificationTELLABS INC·Filed 1998·Granted Aug 27, 2002·107 cites·11 claims
- 0877US4282411AResidual echo suppressor for echo cancellerTELLABS INC·Filed 1979·Granted Aug 4, 1981·26 cites·33 claims
- 0976US4375015AImproved electronic hybrid circuitTELLABS INC·Filed 1980·Granted Feb 22, 1983·27 cites·12 claims
- 1075USD288754SEquipment cabinetTELLABS INC·Filed 1984·Granted Mar 17, 1987·14 cites·1 claims
- 1168US4922530AAdaptive filter with coefficient averaging and methodTELLABS INC·Filed 1989·Granted May 1, 1990·40 cites·31 claims
- 1262US5263121ANeural network solution for interconnection apparatusTELLABS INC·Filed 1991·Granted Nov 16, 1993·24 cites·13 claims
- 1362US4350964AImpedance generator circuitTELLABS INC·Filed 1980·Granted Sep 21, 1982·14 cites·16 claims
- 1459US4363008AElectronic transformerTELLABS INC·Filed 1980·Granted Dec 7, 1982·12 cites·20 claims
- 1559US4283770ASignal processor for digital echo cancellerTELLABS INC·Filed 1979·Granted Aug 11, 1981·13 cites·37 claims
- 1657US4731825ANonblocking switching system and methodTELLABS INC·Filed 1986·Granted Mar 15, 1988·27 cites·16 claims
- 1753US4357494AImpedance canceller circuitTELLABS INC·Filed 1980·Granted Nov 2, 1982·10 cites·11 claims
- 1851USD288752SEquipment cabinetTELLABS INC·Filed 1984·Granted Mar 17, 1987·5 cites·1 claims
- 1937US4177361ASignaling tone transparent echo suppressorTELLABS INC·Filed 1977·Granted Dec 4, 1979·10 cites·24 claims
- 2029US4815124ADX circuitTELLABS INC·Filed 1987·Granted Mar 21, 1989·6 cites·19 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →