DSC COMMUNICATIONS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04J MULTIPLEX COMMUNICATION 2123
 
  
 
H04Q SELECTING 2108
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6208664 HDSL modules for telecommunications channel unit cardsJan 27, 98Mar 27, 01[H04J]
6118772 Wireline telephony on a cellular switchJan 30, 98Sep 12, 00[H04L, H04Q]
6002685 Time slot interchanger and digital communications terminal for ISDN D-channel assemblyDec 04, 96Dec 14, 99[H04Q]
5905734 Time slot interchanger and digital communications terminal for ISDN D-channel assemblyDec 04, 96May 18, 99[H04J]
D406112 Heat sinkMar 20, 98Feb 23, 99[1303]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6246987 System for permitting access to a common resource in response to speaker identification and verificationExpiredFeb 04, 98Jun 12, 01[G10L]
6070213 Telecommunications terminalExpiredDec 30, 97May 30, 00[G06F]
5018131 Optical switchExpiredFeb 28, 89May 21, 91[H04J]
4777647 Pay station telephone interfaceExpiredSep 29, 86Oct 11, 88[H04M]

Top Inventors for This Owner

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