Assignee
SYMMETRICOM INC
US·57 granted patents·1 pending application·3,089 citations·filing 1994–2013
Top patents by PatentIndex Score
58 records- 0199US5854608AHelical antenna having a solid dielectric coreSYMMETRICOM INC·Filed 1994·Granted Dec 29, 1998·463 cites·43 claims
- 0298US6181297B1AntennaSYMMETRICOM INC·Filed 1998·Granted Jan 30, 2001·237 cites·55 claims
- 0397US6985499B2Precise network time transferSYMMETRICOM INC·Filed 2001·Granted Jan 10, 2006·98 cites·6 claims
- 0495US5832375ASuperheterodyne radio receiverSYMMETRICOM INC·Filed 1996·Granted Nov 3, 1998·77 cites·22 claims
- 0594US7535931B1Two-way timing protocolSYMMETRICOM INC·Filed 2004·Granted May 19, 2009·89 cites·10 claims
- 0694US5963180AAntenna system for radio signals in at least two spaced-apart frequency bandsSYMMETRICOM INC·Filed 1996·Granted Oct 5, 1999·157 cites·39 claims
- 0793US7636022B2Adaptive play-out buffers and clock operation in packet networksSYMMETRICOM INC·Filed 2006·Granted Dec 22, 2009·17 cites·29 claims
- 0893US7142619B2Long subscriber loops using automatic gain control mid-span extender unitSYMMETRICOM INC·Filed 2001·Granted Nov 28, 2006·112 cites·1 claims
- 0993US6184845B1Dielectric-loaded antennaSYMMETRICOM INC·Filed 1997·Granted Feb 6, 2001·203 cites·42 claims
- 1092US5945963ADielectrically loaded antenna and a handheld radio communication unit including such an antennaSYMMETRICOM INC·Filed 1996·Granted Aug 31, 1999·123 cites·39 claims
- 1192US5859621AAntennaSYMMETRICOM INC·Filed 1997·Granted Jan 12, 1999·126 cites·13 claims
- 1290US6842426B2Fault detection for subscriber loop repeatersSYMMETRICOM INC·Filed 2001·Granted Jan 11, 2005·57 cites·22 claims
- 1389US5606736AHeterodyne radio receiver with plural variable frequency local oscillator signalsSYMMETRICOM INC·Filed 1994·Granted Feb 25, 1997·86 cites·6 claims
- 1488US6842498B2Global positioning system interference detectionSYMMETRICOM INC·Filed 2002·Granted Jan 11, 2005·33 cites·27 claims
- 1588US6690336B1AntennaSYMMETRICOM INC·Filed 1999·Granted Feb 10, 2004·132 cites·27 claims
- 1688US5764704ADSP implementation of a cellular base station receiverSYMMETRICOM INC·Filed 1996·Granted Jun 9, 1998·99 cites·15 claims
- 1787US7633870B2Network forwarding device and method that forward timing packets through the device with a constant delaySYMMETRICOM INC·Filed 2005·Granted Dec 15, 2009·25 cites·8 claims
- 1887US6512803B2Global positioning system receiver capable of functioning in the presence of interferenceSYMMETRICOM INC·Filed 2001·Granted Jan 28, 2003·33 cites·13 claims
- 1984US7130332B1Pilot tracking for synchronization using correlation between digital signal and locally generated version of PN signalSYMMETRICOM INC·Filed 2000·Granted Oct 31, 2006·28 cites·53 claims
- 2082US7064835B2Miniature gas cell with folded opticsSYMMETRICOM INC·Filed 2003·Granted Jun 20, 2006·24 cites·41 claims
- 2182US6125125ASynchronization of TDMA cell sitesSYMMETRICOM INC·Filed 1997·Granted Sep 26, 2000·72 cites·11 claims
- 2281US9160473B2Asymmetry correction for precise clock synchronization over optical fiberSYMMETRICOM INC·Filed 2013·Granted Oct 13, 2015·5 cites·20 claims
- 2381US7894489B2Adaptive play-out buffers and adaptive clock operation in packet networksSYMMETRICOM INC·Filed 2006·Granted Feb 22, 2011·7 cites·12 claims
- 2481US6943609B2Stratum clock state machine multiplexing switchingSYMMETRICOM INC·Filed 2004·Granted Sep 13, 2005·15 cites·8 claims
- 2581US6876242B2Synchronization moduleSYMMETRICOM INC·Filed 2004·Granted Apr 5, 2005·15 cites·13 claims
- 2681US6549604B2Clock recovery and detection of rapid phase transientsSYMMETRICOM INC·Filed 2000·Granted Apr 15, 2003·22 cites·16 claims
- 2781US5943381AMultiple input frequency locked loopSYMMETRICOM INC·Filed 1997·Granted Aug 24, 1999·45 cites·17 claims
- 2880US6829292B1Increasing gain with isolating upstream and downstream filters and amplifiersSYMMETRICOM INC·Filed 2000·Granted Dec 7, 2004·25 cites·8 claims
- 2980US6490296B2Multi-link segmentation and reassembly for bonding multiple PVC's in an inverse multiplexing arrangementSYMMETRICOM INC·Filed 2001·Granted Dec 3, 2002·36 cites·46 claims
- 3080US5828670ADistribution of synchronization in a synchronous optical environmentSYMMETRICOM INC·Filed 1995·Granted Oct 27, 1998·56 cites·33 claims
- 3179US7876788B2Network time transferSYMMETRICOM INC·Filed 2005·Granted Jan 25, 2011·6 cites·9 claims
- 3279US6605849B1MEMS analog frequency dividerSYMMETRICOM INC·Filed 2002·Granted Aug 12, 2003·28 cites·21 claims
- 3378US8385212B2Method and apparatus for finding latency floor in packet networksSYMMETRICOM INC·Filed 2009·Granted Feb 26, 2013·7 cites·20 claims
- 3477US5751777AMultiple input frequency locked loopSYMMETRICOM INC·Filed 1996·Granted May 12, 1998·40 cites·29 claims
- 3576US7535900B2Multiple transmission bandwidth streams with defferentiated quality of serviceSYMMETRICOM INC·Filed 2004·Granted May 19, 2009·22 cites·79 claims
- 3676US7382845B1Distribution of synchronization in an ethernet local area network environmentSYMMETRICOM INC·Filed 2002·Granted Jun 3, 2008·12 cites·14 claims
- 3774US7366286B1Modified asymmetric digital subscriber line for use with long loopsSYMMETRICOM INC·Filed 2002·Granted Apr 29, 2008·15 cites·36 claims
- 3874US6285315B1Positioning systemsSYMMETRICOM INC·Filed 1999·Granted Sep 4, 2001·69 cites·19 claims
- 3974US5638379AEncoding system for distribution of synchronizationSYMMETRICOM INC·Filed 1995·Granted Jun 10, 1997·42 cites·13 claims
- 4072US6128501AMobile position determination with error correction utilizing cellular networksSYMMETRICOM INC·Filed 1996·Granted Oct 3, 2000·85 cites·16 claims
- 4171US5457729ACommunication network signalling system link monitor and test unitSYMMETRICOM INC·Filed 1995·Granted Oct 10, 1995·82 cites·18 claims
- 4270US5646519ADigital phase detector employing a digitally controllable delay lineSYMMETRICOM INC·Filed 1995·Granted Jul 8, 1997·40 cites·6 claims
- 4369US7660332B2Supporting synchronization status messages on building integrated timing supply synchronization supply unit remote shelvesSYMMETRICOM INC·Filed 2003·Granted Feb 9, 2010·10 cites·5 claims
- 4468US6166608AThermo-electric cooled oven controlled crystal oscillatorSYMMETRICOM INC·Filed 1998·Granted Dec 26, 2000·33 cites·18 claims
- 4566US7310310B1Multi-link SAR for bonding ATM cell-streamsSYMMETRICOM INC·Filed 2003·Granted Dec 18, 2007·17 cites·27 claims
- 4665US6927636B2Light stabilization for an optically excitable atomic mediumSYMMETRICOM INC·Filed 2003·Granted Aug 9, 2005·11 cites·32 claims
- 4761US6707329B2Clock recovery or detection of rapid phase transientsSYMMETRICOM INC·Filed 2003·Granted Mar 16, 2004·5 cites·40 claims
- 4859US6765424B2Stratum clock state machine multiplexer switchingSYMMETRICOM INC·Filed 2001·Granted Jul 20, 2004·9 cites·17 claims
- 4957US7609769B2Image complexity computation in packet based video broadcast systemsSYMMETRICOM INC·Filed 2009·Granted Oct 27, 2009·2 cites·13 claims
- 5057US7161953B2Bonding multiple G.shdsl linksSYMMETRICOM INC·Filed 2002·Granted Jan 9, 2007·4 cites·37 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when SYMMETRICOM INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →