Assignee
VTECH COMMUNICATIONS LTD
HK·60 granted patents·1,454 citations·filing 1994–2006
Top patents by PatentIndex Score
60 records- 0196US6667738B2Touch screen overlay apparatusVTECH COMMUNICATIONS LTD·Filed 2001·Granted Dec 23, 2003·229 cites·16 claims
- 0292USD460446SAuxiliary telephone baseVTECH COMMUNICATIONS LTD·Filed 2001·Granted Jul 16, 2002·48 cites·1 claims
- 0392US5710815AEncoder apparatus and decoder apparatus for a television signal having embedded viewer access control dataVTECH COMMUNICATIONS LTD·Filed 1995·Granted Jan 20, 1998·343 cites·30 claims
- 0488USD456795STelephone baseVTECH COMMUNICATIONS LTD·Filed 2000·Granted May 7, 2002·34 cites·1 claims
- 0582US5497125ACurrent sense circuit apparatus for power amplifier controlVTECH COMMUNICATIONS LTD·Filed 1994·Granted Mar 5, 1996·86 cites·26 claims
- 0679US6856817B2Cordless telephone headset with dialcard displayVTECH COMMUNICATIONS LTD·Filed 2002·Granted Feb 15, 2005·25 cites·3 claims
- 0779USD460059STelephone handsetVTECH COMMUNICATIONS LTD·Filed 2000·Granted Jul 9, 2002·19 cites·1 claims
- 0878US7136929B2Broadcast in a wireless communications systemVTECH COMMUNICATIONS LTD·Filed 2002·Granted Nov 14, 2006·30 cites·13 claims
- 0978US7103030B2Adaptive frequency hopping strategyVTECH COMMUNICATIONS LTD·Filed 2002·Granted Sep 5, 2006·23 cites·15 claims
- 1074USD472538STelephone baseVTECH COMMUNICATIONS LTD·Filed 2002·Granted Apr 1, 2003·15 cites·1 claims
- 1173US7027424B1Method for avoiding interference in a digital communication systemVTECH COMMUNICATIONS LTD·Filed 2000·Granted Apr 11, 2006·17 cites·13 claims
- 1273US6625281B1Method for extending the useful life of a cordless telephone backup battery during a power outage conditionVTECH COMMUNICATIONS LTD·Filed 2000·Granted Sep 23, 2003·23 cites·6 claims
- 1372USD469075STelephone handset and baseVTECH COMMUNICATIONS LTD·Filed 2002·Granted Jan 21, 2003·14 cites·1 claims
- 1471US7990933B2Method for avoiding interference in a digital communication systemVTECH COMMUNICATIONS LTD·Filed 2006·Granted Aug 2, 2011·4 cites·15 claims
- 1569USD439887STelephone handsetVTECH COMMUNICATIONS LTD·Filed 1999·Granted Apr 3, 2001·15 cites·1 claims
- 1669USD412170STelephone handsetVTECH COMMUNICATIONS LTD·Filed 1996·Granted Jul 20, 1999·15 cites·1 claims
- 1768US6914968B1Method and apparatus for telephone call fraud detection and preventionVTECH COMMUNICATIONS LTD·Filed 2000·Granted Jul 5, 2005·19 cites·17 claims
- 1868USD384079STelephone handset housingVTECH COMMUNICATIONS LTD·Filed 1996·Granted Sep 23, 1997·16 cites·1 claims
- 1968USD369803SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted May 14, 1996·18 cites·1 claims
- 2067USD408405STelephone handsetVTECH COMMUNICATIONS LTD·Filed 1996·Granted Apr 20, 1999·14 cites·1 claims
- 2167US5578875ADual battery recharger with backup power feature for use in systems having a base unit and battery-powered portable unitVTECH COMMUNICATIONS LTD·Filed 1994·Granted Nov 26, 1996·50 cites·20 claims
- 2265US7266141B2Hybrid frame structure for wireless communicationsVTECH COMMUNICATIONS LTD·Filed 2002·Granted Sep 4, 2007·11 cites·7 claims
- 2364USD460060STelephone handsetVTECH COMMUNICATIONS LTD·Filed 2001·Granted Jul 9, 2002·11 cites·1 claims
- 2464US6313777B1Binary waveform shaping apparatusVTECH COMMUNICATIONS LTD·Filed 2000·Granted Nov 6, 2001·14 cites·6 claims
- 2562US5586141AInterface protocol method for use in a frequency hopping radio system having first hopping code for synchronization and second hopping code for communicationVTECH COMMUNICATIONS LTD·Filed 1994·Granted Dec 17, 1996·33 cites·16 claims
- 2662USD369798SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted May 14, 1996·13 cites·1 claims
- 2761USD422587STelephone handset housingVTECH COMMUNICATIONS LTD·Filed 1999·Granted Apr 11, 2000·14 cites·1 claims
- 2860US6744748B1Method and apparatus for monitoring errors in a wireless transceiverVTECH COMMUNICATIONS LTD·Filed 2000·Granted Jun 1, 2004·11 cites·14 claims
- 2960USD401931STelephone handset housingVTECH COMMUNICATIONS LTD·Filed 1996·Granted Dec 1, 1998·15 cites·1 claims
- 3060USD369799SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted May 14, 1996·13 cites·1 claims
- 3159USD371359SCordless telephone handset housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted Jul 2, 1996·13 cites·1 claims
- 3258US5619553AMethod of conducting an intercom communication between two cordless telephone handsetsVTECH COMMUNICATIONS LTD·Filed 1994·Granted Apr 8, 1997·32 cites·5 claims
- 3357US6912260B2System clock synchronization using phase-locked loopVTECH COMMUNICATIONS LTD·Filed 2002·Granted Jun 28, 2005·5 cites·4 claims
- 3455US6944284B2Pulsed volume control of a magnetic ringerVTECH COMMUNICATIONS LTD·Filed 2001·Granted Sep 13, 2005·10 cites·22 claims
- 3555US5995554AData framing format for digital radio communications and method of forming sameVTECH COMMUNICATIONS LTD·Filed 1996·Granted Nov 30, 1999·42 cites·6 claims
- 3654US7120190B2Low power RC clocking system for wireless communicationsVTECH COMMUNICATIONS LTD·Filed 2002·Granted Oct 10, 2006·4 cites·17 claims
- 3753US6680984B1Data slicer with digitally-controlled referenceVTECH COMMUNICATIONS LTD·Filed 2000·Granted Jan 20, 2004·6 cites·13 claims
- 3853US5956377AMethod and apparatus for synchronizing frames within a continuous stream of digital dataVTECH COMMUNICATIONS LTD·Filed 1996·Granted Sep 21, 1999·22 cites·2 claims
- 3953USD370482SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted Jun 4, 1996·9 cites·1 claims
- 4052US7020119B2Method and apparatus for digital audio transmissionVTECH COMMUNICATIONS LTD·Filed 2002·Granted Mar 28, 2006·4 cites·22 claims
- 4152USD416254STelephone handset housingVTECH COMMUNICATIONS LTD·Filed 1999·Granted Nov 9, 1999·10 cites·1 claims
- 4248US5502420ACascode VCO frequency modulatorVTECH COMMUNICATIONS LTD·Filed 1994·Granted Mar 26, 1996·13 cites·16 claims
- 4345USD374873SCordless telephone handset housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted Oct 22, 1996·6 cites·1 claims
- 4444US5612971AIntermediate frequency receiver apparatusVTECH COMMUNICATIONS LTD·Filed 1994·Granted Mar 18, 1997·12 cites·7 claims
- 4543USD394257STelephone base housingVTECH COMMUNICATIONS LTD·Filed 1996·Granted May 12, 1998·8 cites·1 claims
- 4641USD369800SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted May 14, 1996·5 cites·1 claims
- 4739US6760008B2Two-axis ball-based cursor control apparatus with magnetic force induced tactile feedbackVTECH COMMUNICATIONS LTD·Filed 2002·Granted Jul 6, 2004·0 cites·20 claims
- 4838USD371129SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted Jun 25, 1996·4 cites·1 claims
- 4938USD369805SCordless telephone base housingVTECH COMMUNICATIONS LTD·Filed 1995·Granted May 14, 1996·4 cites·1 claims
- 5037US6470042B1Phase-locked loop controller for a frequency hopping radioVTECH COMMUNICATIONS LTD·Filed 1999·Granted Oct 22, 2002·13 cites·6 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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