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Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04Q SELECTING 1496
 
  
 
H04B TRANSMISSION 10200
 
  
 
H04J MULTIPLEX COMMUNICATION 4121
 
  
 
G04C ELECTROMECHANICAL CLOCKS OR WATCHES 316
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 3282
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES2107
 
  
 
G04B MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS 235
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 292
 
  
 
G09B EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS 241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6067445 Dual channel dual speed FM subcarrier paging systemJun 07, 96May 23, 00[H04Q]
5929771 Portable wireless communication deviceJul 26, 95Jul 27, 99[H04Q]
5774798 Low power data receiver combined with audio receiverJul 14, 95Jun 30, 98[H04B]
5757782 Paging system with multiple baseband subcarriersAug 04, 95May 26, 98[H04Q]
5745777 Analyzer for frequency modulated signalsAug 09, 96Apr 28, 98[G06F]
5733131 Education and entertainment device with dynamic configuration and operationJul 29, 94Mar 31, 98[G08B, G09B, A63H, H04B]
5729590 Acknowledge back pager using secondary transmission sourceAug 12, 96Mar 17, 98[H04Q]
5682148 Paging system with message numbering prior to transmissionApr 12, 95Oct 28, 97[G08B]
5664948 Delivery of data including preloaded advertising dataOct 11, 94Sep 09, 97[G09B, G08G, G01S, G01B]
5649297 Transmitting digital data using multiple subcarriersOct 21, 94Jul 15, 97[H04Q]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7023832 Paging system with spacial, frequency and time diversityExpiredJul 12, 02Apr 04, 06[H04Q]
5986513 Phase locked loop with limited lock timeExpiredAug 06, 90Nov 16, 99[H03L]
5537407 Watch pager system and communication protocolExpiredJan 21, 94Jul 16, 96[H04Q]
5280501 Data bit synchronizationExpiredOct 09, 90Jan 18, 94[H04L]
5266945 Paging system with energy efficient station locationExpiredJan 15, 91Nov 30, 93[H04B]
5263194 Zero if radio receiver for intermittent operationExpiredMar 07, 90Nov 16, 93[H04B]
5214795 Low voltage automatic frequency control switch for a radio receiverExpiredJun 29, 89May 25, 93[H04B, G05F]
5208810 Method of data flow controlExpiredOct 10, 90May 04, 93[H04J]
5189411 Radio signal data transmission synchronizationExpiredOct 10, 90Feb 23, 93[H04J]
5185604 Message indicating icon mechanismExpiredJun 13, 90Feb 09, 93[H04Q]
5168271 Paging and time keeping system with transmission of time slot identification used for synchronizationExpiredAug 17, 90Dec 01, 92[G08B, H04J]
5166932 Wireless facsimile computer slateExpiredApr 27, 90Nov 24, 92[H04J]
5166973 Radio paging system with local local loopExpiredMar 06, 90Nov 24, 92[H04M]
5159331 Missing radio page message detectionExpiredJun 06, 90Oct 27, 92[H04Q, H04J]
5159713 Watch pager and wrist antennaExpiredMay 22, 89Oct 27, 92[H04B]
5150954 Pager watch system utilizing time slot communicationExpiredSep 12, 90Sep 29, 92[H04Q]
5148469 Direct pager access with full number dialingExpiredJul 05, 90Sep 15, 92[H04M]
5146617 Harmonic noise minimization in a radio receiver by selectively optimizing ic's which produce harmonics in the radio's frequency rangeExpiredOct 15, 90Sep 08, 92[H03K, H04B]
5140198 Image canceling mixer circuit on an integrated circuit chipExpiredAug 30, 89Aug 18, 92[H04B]
5134724 Wrist band for wrist-mounted radio with an uninsulated buckleExpiredMay 08, 90Jul 28, 92[H04B, H01Q]

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