Assignee
KT FREETEL CO LTD
KR·19 granted patents·7 pending applications·321 citations·filing 2001–2008
Top patents by PatentIndex Score
26 records- 0197US7419097B2Method for providing mobile service using code-patternKT FREETEL CO LTD·Filed 2005·Granted Sep 2, 2008·62 cites·14 claims
- 0285US7471679B2Method and apparatus for receivability and reachability test of explicit multicastKT FREETEL CO LTD·Filed 2005·Granted Dec 30, 2008·17 cites·14 claims
- 0385US6757371B2Method for divisional billing and device thereofKT FREETEL CO LTD·Filed 2002·Granted Jun 29, 2004·83 cites·13 claims
- 0484US7509149B2Method and apparatus for changing a sound source of a supplementary service using a ring back tone on callingKT FREETEL CO LTD·Filed 2005·Granted Mar 24, 2009·19 cites·17 claims
- 0574US6941137B2System and method for supervising repeater by using wireless mobileKT FREETEL CO LTD·Filed 2001·Granted Sep 6, 2005·15 cites·8 claims
- 0674US6937590B2Method of supporting small group multicast in mobile IPKT FREETEL CO LTD·Filed 2001·Granted Aug 30, 2005·22 cites·5 claims
- 0773US7043238B2CDMA terminal for providing roaming service to GSM service subscriber in CDMA service areaKT FREETEL CO LTD·Filed 2002·Granted May 9, 2006·22 cites·8 claims
- 0871US7113801B2Method for receiving data using SMS and wireless internet and system thereofKT FREETEL CO LTD·Filed 2002·Granted Sep 26, 2006·26 cites·5 claims
- 0969US7580864B2Method for circulating an electronic gift certificate in online and offline systemKT FREETEL CO LTD·Filed 2003·Granted Aug 25, 2009·6 cites·27 claims
- 1063US7536451B2Method for increasing standby time using access history to 1x ev-do network with access terminal and device thereofKT FREETEL CO LTD·Filed 2002·Granted May 19, 2009·11 cites·6 claims
- 1162US7565167B2Low-cost network system between a base station controller and a base transceiver station, and method for transmitting data between themKT FREETEL CO LTD·Filed 2004·Granted Jul 21, 2009·11 cites·19 claims
- 1261US7471678B2System and apparatus for tunneling service of explicit multicastKT FREETEL CO LTD·Filed 2004·Granted Dec 30, 2008·7 cites·10 claims
- 1361US7158812B2Apparatus and method for measuring output power of pilot channel at CDMA base stationKT FREETEL CO LTD·Filed 2003·Granted Jan 2, 2007·7 cites·3 claims
- 1458US8054803B2Method and apparatus for optimizing neighbor list automatically in synchronous CDMA networkKT FREETEL CO LTD·Filed 2006·Granted Nov 8, 2011·2 cites·13 claims
- 1554US7525947B2Method and apparatus for tunneling service of explicit multicast in mobile IP networkKT FREETEL CO LTD·Filed 2004·Granted Apr 28, 2009·3 cites·15 claims
- 1651US2004107271A1On-line music data providing system via bluetooth headsetKT FREETEL CO LTD·Filed 2003·Application pending·0 cites
- 1751US2004044601A1Batch type billing method and system by using dispersed processingKT FREETEL CO LTD·Filed 2002·Application pending·0 cites
- 1846US7548522B2Orthogonal frequency division multiplexing wireless communication operable on frequency selective channel, and channel compensation methodKT FREETEL CO LTD·Filed 2003·Granted Jun 16, 2009·4 cites·11 claims
- 1943US7327984B2Device and method for measuring receive sensitivity of communication system including receive-only pathKT FREETEL CO LTD·Filed 2004·Granted Feb 5, 2008·3 cites·10 claims
- 2042US2009073031A1Method and system for measuring location using round trip time information in mobile communication networkKT FREETEL CO LTD·Filed 2008·Application pending·0 cites
- 2141US2009112453A1Method of providing direction information according to real-time traffic conditionsKT FREETEL CO LTD·Filed 2008·Application pending·0 cites
- 2240US2005277407A1Method and device for providing mobile services with virtual numberKT FREETEL CO LTD·Filed 2005·Application pending·0 cites
- 2339US7113807B2Base station and method for receiving and processing signal in the base stationKT FREETEL CO LTD·Filed 2002·Granted Sep 26, 2006·0 cites·9 claims
- 2439US2007115863A1Dualduplexer having matrix structure and method for forming the sameKT FREETEL CO LTD·Filed 2004·Application pending·0 cites
- 2536US2008103983A1Method and Apparatus for Selling Used ContentsKT FREETEL CO LTD·Filed 2005·Application pending·0 cites
- 2633US7499512B2Clock transmission apparatus for network synchronization between systems using an even-second clock and an Unshielded Twisted Pair (UTP)KT FREETEL CO LTD·Filed 2004·Granted Mar 3, 2009·1 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →