3Com Technologies

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 11274
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 5442
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 292
 
  
 
H04J MULTIPLEX COMMUNICATION 2123
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132
 
  
 
H03L AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES 179

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6975627 Modification of tag fields in Ethernet data packetsOct 13, 99Dec 13, 05[H04L]
6922410 Organization of databases in network switches for packet-based data communications networksApr 06, 99Jul 26, 05[H04L]
6667985 Communication switch including input bandwidth throttling to reduce output congestionAug 31, 99Dec 23, 03[H04L]
6661787 Integrated data table in a networkApr 06, 99Dec 09, 03[H04L]
6661790 Packet multicasting in a ring architectureAug 06, 99Dec 09, 03[H04L]
6470025 System for providing fair access for VLANs to a shared transmission mediumFeb 02, 99Oct 22, 02[H04L, H04J]
6285674 Hybrid distributed broadcast and unknown server for emulated local area networksJan 15, 98Sep 04, 01[H04L]
6256318 Network hub activity displayAug 26, 98Jul 03, 01[H04L]
6240457 Computer network management protocol including specification of multiple data itemsDec 03, 98May 29, 01[G06F]
6236659 Network configurationDec 01, 97May 22, 01[H04L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6580712 System for controlling look-ups in a data table in a network switchExpiredOct 12, 99Jun 17, 03[H04L]
6550025 Last-in first-out data stacks and processing data using such data stacksExpiredOct 27, 98Apr 15, 03[H03M, G06F, G01R]
6538994 Monitoring of connection between an ethernet hub and an end stationExpiredApr 06, 99Mar 25, 03[G01R]
6529507 Restriction of source address up-dating in network switchesExpiredFeb 22, 99Mar 04, 03[H04L]
6523070 Communication device with circuitry to promote cascade series connection including identification of device position in the series and sensing the end device in the seriesExpiredFeb 23, 00Feb 18, 03[G06F]
6504843 System and method for dynamically mapping a high speed link to a multiplicity of low speed trunked linksExpiredJul 14, 99Jan 07, 03[H04L]
6473400 Computation of traffic flow by scaling sample packet dataExpiredApr 06, 99Oct 29, 02[H04L]
6442161 Data packet transmissionExpiredJul 27, 98Aug 27, 02[H04L]
6442162 Credit-based scheme for high performance communication between devices in a packet-based communication systemExpiredFeb 22, 99Aug 27, 02[H04L]
6438129 Restriction of source address look-ups in networkExpiredFeb 22, 99Aug 20, 02[H04L]
6430192 Method for transmitting multimedia packet data using a contention-resolution processExpiredJan 14, 99Aug 06, 02[H04L]
6425015 Stacked communication devices and method for port mirroring using modified protocolExpiredNov 30, 98Jul 23, 02[G06F]
6389119 Dual-circuit telephonyExpiredMar 25, 99May 14, 02[H04M]
6336591 Signalling between independently powered electrical circuit cardsExpiredNov 02, 98Jan 08, 02[G06K]
6330245 Hub system with ring arbitrationExpiredDec 09, 98Dec 11, 01[H04L, G06F]
6295616 Analysis of data streamsExpiredOct 27, 98Sep 25, 01[G01R]
6275880 Framing codes for high-speed parallel data busesExpiredFeb 22, 99Aug 14, 01[G06F]
6236641 Storm protection mechanismExpiredAug 24, 98May 22, 01[H04L]
6188696 Method of operating a communication network to provide load balancingExpiredMar 06, 98Feb 13, 01[H04L]
6175875 Multicast filteringExpiredFeb 27, 98Jan 16, 01[G06F]

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