EXCEL SWITCHING CORPORATION

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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 13254
 
 
 
H04J MULTIPLEX COMMUNICATION 8115
 
 
 
H04M TELEPHONIC COMMUNICATION 8147
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 7421
 
 
 
H04Q SELECTING 797
 
 
 
H04B TRANSMISSION 1201
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1147

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6898199 Architecture for providing flexible, programmable supplementary services in an expandable telecommunications systemMar 18, 99May 24, 05[H04L, H04Q]
6594685 Universal application programming interface having generic message formatApr 14, 99Jul 15, 03[G06F]
6526050 Programming call-processing application in a switching systemJun 08, 98Feb 25, 03[H04L]
6463056 Arrangement for providing network protocol data independence in an expandable telecommunications systemMar 18, 99Oct 08, 02[H04M, H04J]
6397385 Method and apparatus for in service software upgrade for expandable telecommunications systemJul 16, 99May 28, 02[G06F]
6389024 Flexible call routing systemJun 08, 98May 14, 02[H04Q]
6373849 Resource interface unit for telecommunications switching nodeJun 08, 98Apr 16, 02[H04L]
6370136 Dialing plan arrangement for expandable telecommunications systemMar 18, 99Apr 09, 02[H04M, H04L]
6370146 Method and apparatus for non-disruptive addition of a new node to an inter-nodal networkJun 29, 98Apr 09, 02[H04J]
6285670 Telecommunications switch with multiple ports for host-node communicationsFeb 02, 98Sep 04, 01[H04L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6701131 International universal call progress analysis systemExpiredJan 17, 01Mar 02, 04[H04M]
6603757 Voice-data access concentrator for node in an expandable telecommunications systemExpiredApr 14, 99Aug 05, 03[H04L]
6522646 Expandable telecommunications systemExpiredJun 30, 99Feb 18, 03[H04L]
6226288 Sub-rate switching telecommunications switchExpiredSep 10, 97May 01, 01[H04Q]
6147872 Injector/ejector machanism for printed circuit cardsExpiredFeb 08, 99Nov 14, 00[H05K]
5912801 Telecommunication switch chassisExpiredSep 16, 97Jun 15, 99[H05K]
D349503 Telecommunications switchExpiredFeb 23, 93Aug 09, 94[]

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