Assignee
AT & T & PHILIPS TELECOMM
NL·14 granted patents·409 citations·filing 1986–1989
Top patents by PatentIndex Score
14 records- 0192US4915651ACoaxial connectorAT & T & PHILIPS TELECOMM·Filed 1988·Granted Apr 10, 1990·172 cites·3 claims
- 0277US4759018AHigher order digital transmission system including a multiplexer and a demultiplexerAT & T & PHILIPS TELECOMM·Filed 1986·Granted Jul 19, 1988·45 cites·3 claims
- 0369US4746902AArrangement for compensating for non-linear distortion in an input signal to be digitized and an echo cancelling system comprising such a arrangementAT & T & PHILIPS TELECOMM·Filed 1987·Granted May 24, 1988·36 cites·12 claims
- 0467US4817081AAdaptive filter for producing an echo cancellation signal in a transceiver system for duplex digital communication through one single pair of conductorsAT & T & PHILIPS TELECOMM·Filed 1987·Granted Mar 28, 1989·34 cites·1 claims
- 0567US4808810APreamplifier for an optical receiverAT & T & PHILIPS TELECOMM·Filed 1987·Granted Feb 28, 1989·25 cites·3 claims
- 0652US4920322AVoltage controlled r-c oscillator and phase locked loopAT & T & PHILIPS TELECOMM·Filed 1989·Granted Apr 24, 1990·15 cites·3 claims
- 0752US4849964AMultistage switching system for switching N1 input channels to N2 output channelsAT & T & PHILIPS TELECOMM·Filed 1988·Granted Jul 18, 1989·19 cites·3 claims
- 0849US4796254ABroadband space switching network and parallel-series converter and series-parallel converter for use in such a space switching networkAT & T & PHILIPS TELECOMM·Filed 1987·Granted Jan 3, 1989·19 cites·3 claims
- 0945US4797904ATransmitter for ISDN S-bus interface circuitAT & T & PHILIPS TELECOMM·Filed 1987·Granted Jan 10, 1989·18 cites·3 claims
- 1040US4811335ABroadband/narrow-band switching network of the time-space-time type and time and space switching stages for broadband/narrow-band channelsAT & T & PHILIPS TELECOMM·Filed 1987·Granted Mar 7, 1989·13 cites·7 claims
- 1135US4920530AAdaptive time-discrete filter for forming a cancelling signal from synchronous data symbolsAT & T & PHILIPS TELECOMM·Filed 1987·Granted Apr 24, 1990·7 cites·4 claims
- 1228US4825176AControl amplifierAT & T & PHILIPS TELECOMM·Filed 1987·Granted Apr 25, 1989·2 cites·1 claims
- 1328US4786884AAdaptive transversal filterAT & T & PHILIPS TELECOMM·Filed 1987·Granted Nov 22, 1988·2 cites·5 claims
- 1422US4772860APhase-control loopAT & T & PHILIPS TELECOMM·Filed 1987·Granted Sep 20, 1988·2 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →