Assignee
TOLLGRADE COMMUNICATIONS INC
US·32 granted patents·4 pending applications·462 citations·filing 1989–2017
Top patents by PatentIndex Score
36 records- 0193US9069009B2Power line takeoff clamp assemblyTOLLGRADE COMMUNICATIONS INC·Filed 2014·Granted Jun 30, 2015·9 cites·3 claims
- 0291US4961218AEnhanced line powered amplifierTOLLGRADE COMMUNICATIONS INC·Filed 1989·Granted Oct 2, 1990·107 cites·12 claims
- 0389US8896291B2Power line takeoff clamp assemblyTOLLGRADE COMMUNICATIONS INC·Filed 2013·Granted Nov 25, 2014·6 cites·7 claims
- 0482US6531879B1Method and apparatus for delay-line time-domain reflectometryTOLLGRADE COMMUNICATIONS INC·Filed 2000·Granted Mar 11, 2003·25 cites·17 claims
- 0581USD622583SLine clampTOLLGRADE COMMUNICATIONS INC·Filed 2008·Granted Aug 31, 2010·25 cites·1 claims
- 0680US5982412ACoaxial testing and provisioning network interface deviceTOLLGRADE COMMUNICATIONS INC·Filed 1996·Granted Nov 9, 1999·80 cites·22 claims
- 0778US9562925B2Power line management systemTOLLGRADE COMMUNICATIONS INC·Filed 2013·Granted Feb 7, 2017·6 cites·21 claims
- 0876US6738435B1Matched-filter frequency-shift-keyed receiver using degenerate digital signal processing techniquesTOLLGRADE COMMUNICATIONS INC·Filed 2000·Granted May 18, 2004·16 cites·25 claims
- 0974US7567520B2Apparatus and method of remotely enabling a special mode of operation of an endpoint in a VoIP networkTOLLGRADE COMMUNICATIONS INC·Filed 2005·Granted Jul 28, 2009·18 cites·16 claims
- 1072US7235979B2Apparatus and method for measuring loop insertion loss single-endedlyTOLLGRADE COMMUNICATIONS INC·Filed 2006·Granted Jun 26, 2007·4 cites·14 claims
- 1170US7602885B2Automatic provisioning of a telephone line test systemTOLLGRADE COMMUNICATIONS INC·Filed 2005·Granted Oct 13, 2009·6 cites·17 claims
- 1270US7529347B2Test system for assessing DSL capability of telephone linesTOLLGRADE COMMUNICATIONS INC·Filed 2004·Granted May 5, 2009·10 cites·20 claims
- 1369US7515691B2Method for testing DSL capability of telephone linesTOLLGRADE COMMUNICATIONS INC·Filed 2004·Granted Apr 7, 2009·12 cites·37 claims
- 1465USD640537SLine clampTOLLGRADE COMMUNICATIONS INC·Filed 2010·Granted Jun 28, 2011·13 cites·1 claims
- 1564US6574311B1Apparatus and method for detecting a bridged tap and/or an end-of-line of a conventional telephone line using delay-line time-domain reflectometryTOLLGRADE COMMUNICATIONS INC·Filed 2001·Granted Jun 3, 2003·9 cites·38 claims
- 1655US7356127B2Global digital measurement deviceTOLLGRADE COMMUNICATIONS INC·Filed 2003·Granted Apr 8, 2008·2 cites·21 claims
- 1755US5586181AMetallic channel unit networkTOLLGRADE COMMUNICATIONS INC·Filed 1994·Granted Dec 17, 1996·24 cites·18 claims
- 1854US7653180B2Method for assessing DSL capability of telephone linesTOLLGRADE COMMUNICATIONS INC·Filed 2004·Granted Jan 26, 2010·2 cites·25 claims
- 1953US7508218B2Apparatus and method for measuring loop insertion loss single-endedlyTOLLGRADE COMMUNICATIONS INC·Filed 2007·Granted Mar 24, 2009·0 cites·8 claims
- 2053US7508219B2Apparatus and method for measuring loop insertion loss single-endedlyTOLLGRADE COMMUNICATIONS INC·Filed 2007·Granted Mar 24, 2009·0 cites·6 claims
- 2153US7386039B2Method and apparatus for identifying faults in a broadband networkTOLLGRADE COMMUNICATIONS INC·Filed 2003·Granted Jun 10, 2008·1 cites·27 claims
- 2252US7529348B2Method of performing insertion loss estimationTOLLGRADE COMMUNICATIONS INC·Filed 2001·Granted May 5, 2009·4 cites·55 claims
- 2351US6453015B1Telephony testing systemTOLLGRADE COMMUNICATIONS INC·Filed 1998·Granted Sep 17, 2002·17 cites·15 claims
- 2450US7436935B2Qualifying telephone lines for data transmissionTOLLGRADE COMMUNICATIONS INC·Filed 2004·Granted Oct 14, 2008·1 cites·20 claims
- 2546US5202919AMetallic channel unit networkTOLLGRADE COMMUNICATIONS INC·Filed 1990·Granted Apr 13, 1993·15 cites·18 claims
- 2646US2010110894A1Automatic provisioning of a remote test head of a combined ip/telephony/cable networkTOLLGRADE COMMUNICATIONS INC·Filed 2007·Application pending·0 cites
- 2745US6650732B2Telephony testing systemTOLLGRADE COMMUNICATIONS INC·Filed 2002·Granted Nov 18, 2003·1 cites·4 claims
- 2844US7433323B2Remote testing of high speed data and voice communication networksTOLLGRADE COMMUNICATIONS INC·Filed 2002·Granted Oct 7, 2008·0 cites·16 claims
- 2943US6433905B1Frequency agile transponderTOLLGRADE COMMUNICATIONS INC·Filed 1998·Granted Aug 13, 2002·18 cites·20 claims
- 3042US2014130111A1Agent-based communication service quality monitoring and diagnosticsTOLLGRADE COMMUNICATIONS INC·Filed 2013·Application pending·0 cites
- 3140US6285744B1Telephony test system with adjustable output impedanceTOLLGRADE COMMUNICATIONS INC·Filed 1998·Granted Sep 4, 2001·14 cites·16 claims
- 3238US6320939B1Remote telephony testing deviceTOLLGRADE COMMUNICATIONS INC·Filed 1997·Granted Nov 20, 2001·9 cites·22 claims
- 3335US6522723B1Telephony line test unit and methodTOLLGRADE COMMUNICATIONS INC·Filed 1999·Granted Feb 18, 2003·5 cites·19 claims
- 3432US5457743AMetallic channel unit networkTOLLGRADE COMMUNICATIONS INC·Filed 1993·Granted Oct 10, 1995·3 cites·20 claims
- 3531US2017270072A1Blade test access matrixTOLLGRADE COMMUNICATIONS INC·Filed 2017·Application pending·0 cites
- 3629US2008031143A1Voice Over Internet Protocol (Voip) Quality Testing Over Hybrid Fiber/Coax (Hfc) NetworkTOLLGRADE COMMUNICATIONS INC·Filed 2005·Application pending·0 cites
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