Assignee
PLESSEY TELECOMM
GB·87 granted patents·2,068 citations·filing 1987–1997
Top patents by PatentIndex Score
87 records- 0189US5491573AOptical signal transmission networkPLESSEY TELECOMM·Filed 1993·Granted Feb 13, 1996·81 cites·3 claims
- 0287US5069521AOptical transmission apparatusPLESSEY TELECOMM·Filed 1990·Granted Dec 3, 1991·124 cites·2 claims
- 0381US5579311ATelecommunications switchingPLESSEY TELECOMM·Filed 1994·Granted Nov 26, 1996·78 cites·17 claims
- 0479US5544168AATM switching arrangementPLESSEY TELECOMM·Filed 1994·Granted Aug 6, 1996·91 cites·5 claims
- 0579US5303303AData communication system using encrypted data packetsPLESSEY TELECOMM·Filed 1991·Granted Apr 12, 1994·97 cites·16 claims
- 0678US4995083AMethod of establishing a radio link in one of a plurality of channels between two radio unitsPLESSEY TELECOMM·Filed 1989·Granted Feb 19, 1991·68 cites·3 claims
- 0776US5271004AAsynchronous transfer mode switching arrangement providing broadcast transmissionPLESSEY TELECOMM·Filed 1991·Granted Dec 14, 1993·80 cites·3 claims
- 0876US5204859AMethod and apparatus for detecting a frame alignment word in a data systemPLESSEY TELECOMM·Filed 1991·Granted Apr 20, 1993·64 cites·11 claims
- 0975US5974027ATelecommunications network including a channel switching protection arrangementPLESSEY TELECOMM·Filed 1995·Granted Oct 26, 1999·62 cites·5 claims
- 1073US5872645ATelecommunications networkPLESSEY TELECOMM·Filed 1997·Granted Feb 16, 1999·45 cites·9 claims
- 1172US5172376ASdh rejustificationPLESSEY TELECOMM·Filed 1991·Granted Dec 15, 1992·43 cites·4 claims
- 1269US5303232AHigh performance asynchronous transfer mode switchPLESSEY TELECOMM·Filed 1991·Granted Apr 12, 1994·61 cites·4 claims
- 1369US5109378AAsynchronous time division switch with increased traffic handling capabilityPLESSEY TELECOMM·Filed 1989·Granted Apr 28, 1992·36 cites·7 claims
- 1468US5835660AOptical fibre clamping devicePLESSEY TELECOMM·Filed 1996·Granted Nov 10, 1998·32 cites·6 claims
- 1568US5793760AMethod of multiplexing and a multiplexerPLESSEY TELECOMM·Filed 1997·Granted Aug 11, 1998·33 cites·9 claims
- 1667US5416423AMethod and apparatus for verifying the integrity of a smart cardPLESSEY TELECOMM·Filed 1994·Granted May 16, 1995·55 cites·8 claims
- 1765US5703879AATM switching arrangementPLESSEY TELECOMM·Filed 1996·Granted Dec 30, 1997·59 cites·11 claims
- 1864US5459724AATM switching arrangementPLESSEY TELECOMM·Filed 1992·Granted Oct 17, 1995·45 cites·4 claims
- 1964US5062518ACoin validation apparatusPLESSEY TELECOMM·Filed 1989·Granted Nov 5, 1991·34 cites·11 claims
- 2063US5668802AHigh-speed digital subscriber linesPLESSEY TELECOMM·Filed 1994·Granted Sep 16, 1997·59 cites·14 claims
- 2163US5039995ADistributed antenna systemPLESSEY TELECOMM·Filed 1988·Granted Aug 13, 1991·23 cites·2 claims
- 2262US5287513AMultiplex data ring transmissionPLESSEY TELECOMM·Filed 1992·Granted Feb 15, 1994·28 cites·4 claims
- 2361US5822419ATelecommunications service interactionsPLESSEY TELECOMM·Filed 1996·Granted Oct 13, 1998·36 cites·5 claims
- 2461US5682423AElectrical power and telephone ringer signal distribution systemPLESSEY TELECOMM·Filed 1996·Granted Oct 28, 1997·36 cites·6 claims
- 2557US5528406ATelecommunications switching devicePLESSEY TELECOMM·Filed 1995·Granted Jun 18, 1996·44 cites·4 claims
- 2656US5734902ACommunication system for maintaining data consistency among replicated shared objectsPLESSEY TELECOMM·Filed 1993·Granted Mar 31, 1998·43 cites·6 claims
- 2756US5182780AOptical backplane interconnecting circuit boardsPLESSEY TELECOMM·Filed 1991·Granted Jan 26, 1993·24 cites·13 claims
- 2856US5077729ATesting optical fiber linksPLESSEY TELECOMM·Filed 1990·Granted Dec 31, 1991·33 cites·1 claims
- 2954US5579314AConnectionless information service deliveryPLESSEY TELECOMM·Filed 1995·Granted Nov 26, 1996·22 cites·4 claims
- 3054US5544172AMethod for the digital transmission of dataPLESSEY TELECOMM·Filed 1994·Granted Aug 6, 1996·17 cites·8 claims
- 3152US5283785ABus bypassing matrix switch in add-drop multiplexerPLESSEY TELECOMM·Filed 1991·Granted Feb 1, 1994·18 cites·4 claims
- 3252US5170391AFault detection and bandwidth monitoring means for a packet switching arrangementPLESSEY TELECOMM·Filed 1990·Granted Dec 8, 1992·26 cites·3 claims
- 3352US5056087APcm communication systemPLESSEY TELECOMM·Filed 1990·Granted Oct 8, 1991·19 cites·10 claims
- 3450US4992666AMeasurement of concentricity of core and cladding profiles of an optical fiber preform using fluorescencePLESSEY TELECOMM·Filed 1989·Granted Feb 12, 1991·14 cites·14 claims
- 3549US5001741AApparatus for testing and sparing linecard equipment in a telecommunications exchangePLESSEY TELECOMM·Filed 1989·Granted Mar 19, 1991·11 cites·3 claims
- 3647US6009530AReal time clock synchronization in a telecommunications networkPLESSEY TELECOMM·Filed 1995·Granted Dec 28, 1999·17 cites·4 claims
- 3747US5103448ASimultaneous ringing control in the time division duplex telecommunications systemPLESSEY TELECOMM·Filed 1990·Granted Apr 7, 1992·34 cites·4 claims
- 3846US5896378ASDH Add/Drop MultiplexerPLESSEY TELECOMM·Filed 1995·Granted Apr 20, 1999·12 cites·6 claims
- 3946US5636260ATelecommunication customer interfacePLESSEY TELECOMM·Filed 1995·Granted Jun 3, 1997·13 cites·5 claims
- 4045US5911038AHigh availability telecommunications system with a dual interface for mirrored asynchronous processingPLESSEY TELECOMM·Filed 1997·Granted Jun 8, 1999·13 cites·7 claims
- 4145US5790552AStatistical gain using ATM signallingPLESSEY TELECOMM·Filed 1995·Granted Aug 4, 1998·21 cites·9 claims
- 4245US5604617ATelecommunications switching elementPLESSEY TELECOMM·Filed 1994·Granted Feb 18, 1997·15 cites·6 claims
- 4344US5694397AConstant bit rate synchronizationPLESSEY TELECOMM·Filed 1995·Granted Dec 2, 1997·28 cites·12 claims
- 4443US5204799AProtective arrangement for telecommunications line interface circuitPLESSEY TELECOMM·Filed 1990·Granted Apr 20, 1993·16 cites·33 claims
- 4542US5627824ATelecommunications networkPLESSEY TELECOMM·Filed 1994·Granted May 6, 1997·14 cites·4 claims
- 4641US5504739AReconfigurable switch memoryPLESSEY TELECOMM·Filed 1994·Granted Apr 2, 1996·9 cites·1 claims
- 4741US5475680AAsynchronous time division multiplex switching systemPLESSEY TELECOMM·Filed 1993·Granted Dec 12, 1995·25 cites·7 claims
- 4841US5406075AExternally-mounted utility meter reading arrangementPLESSEY TELECOMM·Filed 1992·Granted Apr 11, 1995·15 cites·15 claims
- 4940US5392327ATermination unit with maintenance facilityPLESSEY TELECOMM·Filed 1992·Granted Feb 21, 1995·10 cites·6 claims
- 5039US5537469ABandwidth allocation of DPNSS networksPLESSEY TELECOMM·Filed 1995·Granted Jul 16, 1996·11 cites·3 claims
Showing the top 50 of 87 patent records by PatentIndex Score.
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