EICON NETWORKS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04M TELEPHONIC COMMUNICATION 6157
 
  
 
H04Q SELECTING 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5490214 Method and apparatus for selectively generating control signals in a telephone systemJul 08, 94Feb 06, 96[H04M]
5459781 Selectively activated dual tone multi-frequency detectorJan 12, 94Oct 17, 95[H04M]
5450484 Voice detectionMar 01, 93Sep 12, 95[H04M]
5450485 Detecting whether a telephone line has been disconnectedApr 19, 94Sep 12, 95[H04M]
5428662 Detecting make-break clicks on a telephone lineMar 01, 93Jun 27, 95[H04M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6944290 Echo cancellation through auxiliary-vector filteringExpiredApr 14, 01Sep 13, 05[H04M]
6931057 Method, article of manufacture and system to determine a bit rate of a signalExpiredApr 05, 01Aug 16, 05[H04Q]
5161181 Automatic number identification blocking systemExpiredJan 10, 90Nov 03, 92[H04M]
4862492 Measurement of transmission quality of a telephone channelExpiredOct 26, 88Aug 29, 89[H04M, H04B]
4852149 Automated call filterExpiredJun 29, 88Jul 25, 89[H04M]
4849688 Detection of single-frequency signalsExpiredSep 16, 88Jul 18, 89[G01R]
4760516 Peripheral interrupt interface for multiple access to an interrupt levelExpiredNov 25, 86Jul 26, 88[G06F]
4750516 Vacuum check valveExpiredJul 21, 87Jun 14, 88[F16K]

Top Inventors for This Owner

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