Digital Systems International, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04M TELEPHONIC COMMUNICATION 2161

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5822416 System and method for real-time screening and routing of telephone callsMar 04, 96Oct 13, 98[H04M]
5467391 Integrated intelligent call blendingJul 14, 94Nov 14, 95[H04M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5101425 Operations monitoring systemExpiredAug 07, 90Mar 31, 92[H04M]
4627078 Data communication systemExpiredMay 04, 84Dec 02, 86[H04L]
4596022 FSK data communication systemExpiredAug 25, 83Jun 17, 86[H04L]
4580009 Telephone mouthpiece modular couplerExpiredMay 08, 84Apr 01, 86[H04M]
4500751 Data communication systemExpiredJul 20, 82Feb 19, 85[H04M]
4466107 Data communication systemExpiredSep 14, 81Aug 14, 84[H04B]

Top Inventors for This Owner

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