Assignee
DDI CORP
JP·18 granted patents·3 pending applications·328 citations·filing 2000–2004
Top patents by PatentIndex Score
21 records- 0193US6775478B2Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converterDDI CORP·Filed 2001·Granted Aug 10, 2004·40 cites·44 claims
- 0285US6836484B2Wireless packet communication method and system for transmitting packets between base station and radio terminal stationDDI CORP·Filed 2001·Granted Dec 28, 2004·41 cites·22 claims
- 0384US6690928B1Mobile communication system for forecasting communication trafficDDI CORP·Filed 2000·Granted Feb 10, 2004·37 cites·12 claims
- 0480US6961316B2Mobile communication system having adaptively assigned packet rateDDI CORP·Filed 2001·Granted Nov 1, 2005·28 cites·7 claims
- 0580US6898423B2Group communication system for mobile terminals having real time communication capabilitiesDDI CORP·Filed 2001·Granted May 24, 2005·35 cites·5 claims
- 0676US7212972B2Audio features description method and audio video features description collection construction methodDDI CORP·Filed 2000·Granted May 1, 2007·23 cites·24 claims
- 0775US7010585B2DNS server, DHCP server, terminal and communication systemDDI CORP·Filed 2001·Granted Mar 7, 2006·23 cites·11 claims
- 0875US6785248B2Spread spectrum communication method and spread spectrum communication apparatusDDI CORP·Filed 2000·Granted Aug 31, 2004·18 cites·10 claims
- 0974US7010504B2Competitive buying and selling system and its control methodDDI CORP·Filed 2001·Granted Mar 7, 2006·6 cites·8 claims
- 1070US6763059B2Spread spectrum signal demodulatorDDI CORP·Filed 2000·Granted Jul 13, 2004·11 cites·11 claims
- 1169US6748178B2Optical transmission lineDDI CORP·Filed 2001·Granted Jun 8, 2004·11 cites·3 claims
- 1268US6515793B2Optical waveform shaperDDI CORP·Filed 2000·Granted Feb 4, 2003·10 cites·8 claims
- 1367US6782201B2Four fiber ring network optical switching circuit using branched inputsDDI CORP·Filed 2000·Granted Aug 24, 2004·7 cites·7 claims
- 1466US2004249744A1Competitive buying and selling system, its control method, and recording media having its control programs recorded thereonDDI CORP·Filed 2004·Application pending·0 cites
- 1561US7152063B2Scheme for filtering documents on network using relevant and non-relevant profilesDDI CORP·Filed 2001·Granted Dec 19, 2006·19 cites·12 claims
- 1661US6741810B2Signal demultiplexing device and signal routing device in high speed transmission systemDDI CORP·Filed 2001·Granted May 25, 2004·5 cites·4 claims
- 1761US6690732B2Scene characteristics detection type video encoding apparatusDDI CORP·Filed 2001·Granted Feb 10, 2004·4 cites·8 claims
- 1859US6377388B1Optical signal processorDDI CORP·Filed 2000·Granted Apr 23, 2002·7 cites·14 claims
- 1954US7010592B2Method for collecting statistical traffic dataDDI CORP·Filed 2001·Granted Mar 7, 2006·3 cites·12 claims
- 2046US2005086379A1DNS server, DHCP server, terminal and communication systemDDI CORP·Filed 2004·Application pending·0 cites
- 2142US2001019587A1Image transmission system, viewing system for received images, and image transmission viewing system with TV conference functionDDI CORP·Filed 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when DDI CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →