DDI CORPORATION
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 01, 2007 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 442 Total Citation Count
- Sep 06, 2000 Earliest Filing
- 26 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
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Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7212972 Audio features description method and audio video features description collection construction methodExpiredDec 07, 00May 01, 07[G10L]
7152063 Scheme for filtering documents on network using relevant and non-relevant profilesExpiredFeb 28, 01Dec 19, 06[G06F]
7010504 Competitive buying and selling system and its control methodExpiredMar 27, 01Mar 07, 06[G06F]
6961316 Mobile communication system having adaptively assigned packet rateExpiredJan 16, 01Nov 01, 05[H04L]
6898423 Group communication system for mobile terminals having real time communication capabilitiesExpiredMar 23, 01May 24, 05[H04M, H04Q, H04B]
2005/0086,379 DNS server, DHCP server, terminal and communication systemAbandonedOct 27, 04Apr 21, 05[G06F]
6836484 Wireless packet communication method and system for transmitting packets between base station and radio terminal stationExpiredFeb 23, 01Dec 28, 04[H04L, H04Q, H04B, H04J]
2004/0249,744 Competitive buying and selling system, its control method, and recording media having its control programs recorded thereonAbandonedJun 10, 04Dec 09, 04[G06F]
6785248 Spread spectrum communication method and spread spectrum communication apparatusExpiredDec 15, 00Aug 31, 04[H04Q, H04B]
6782201 Four fiber ring network optical switching circuit using branched inputsExpiredDec 07, 00Aug 24, 04[H04B, H04J]
6775478 Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converterExpiredMar 23, 01Aug 10, 04[H04B, H04J]
6741810 Signal demultiplexing device and signal routing device in high speed transmission systemExpiredFeb 15, 01May 25, 04[H04J]
6690928 Mobile communication system for forecasting communication trafficExpiredOct 04, 00Feb 10, 04[H04M]
6615030 Mobile communications system and radio base station apparatusExpiredSep 06, 00Sep 02, 03[H04B]
Top Inventors for This Owner
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