Inventor · disambiguated record
Khalid Karimullah
Also filed as: KARIMULLAH KHALID
19 granted patents·2 pending applications·788 citations·filing 1993–2012
96Inventor score
Top patents by PatentIndex Score
21 records- 0196US5343493APersonal assistance system and method for use with a cellular communication systemHUGHES AIRCRAFT CO·Filed 1993·Granted Aug 30, 1994·381 cites·15 claims
- 0294US6539050B1Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmissionHUGHES ELECTRONICS CORP·Filed 1998·Granted Mar 25, 2003·92 cites·22 claims
- 0385US6738366B1System and method for using inhibit sense multiple access (isma) protocol and a capture message to optimize random access control and data packet communication between access terminals and a base station over a wireless reverse common channelHUGHES ELECTRONICS CORP·Filed 2000·Granted May 18, 2004·40 cites·5 claims
- 0482US6351240B1Circularly polarized reflect array using 2-bit phase shifter having initial phase perturbationHUGHES ELECTRONICS CORP·Filed 2000·Granted Feb 26, 2002·41 cites·27 claims
- 0579US7492749B2Method and system for providing multi-input-multi-output (MIMO) downlink transmissionDIRECTV GROUP INC·Filed 2004·Granted Feb 17, 2009·18 cites·20 claims
- 0679US5423081ACellular power amplifier power level control circuitryHUGHES AIRCRAFT CO·Filed 1993·Granted Jun 6, 1995·45 cites·17 claims
- 0778US6940809B2System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data framesDIRECTV GROUP INC·Filed 2004·Granted Sep 6, 2005·22 cites·7 claims
- 0876US8902840B2Method and system for providing multi-input-multi-output (MIMO) downlink transmissionSONG JIAN·Filed 2012·Granted Dec 2, 2014·4 cites·20 claims
- 0970US8243706B2Method and system for providing multi-input-multi-output (MIMO) downlink transmissionSONG JIAN·Filed 2009·Granted Aug 14, 2012·4 cites·21 claims
- 1068US7505440B2Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signalsDIRECTV GROUP INC·Filed 2008·Granted Mar 17, 2009·2 cites·30 claims
- 1168US6396822B1Method and apparatus for encoding data for transmission in a communication systemHUGHES ELECTRONICS CORP·Filed 1998·Granted May 28, 2002·24 cites·17 claims
- 1264US7483490B2Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmissionDIRECTV GROUP INC·Filed 2003·Granted Jan 27, 2009·4 cites·22 claims
- 1363US9467200B2Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signalsSUN FENG-WEN·Filed 2009·Granted Oct 11, 2016·1 cites·16 claims
- 1462US7342904B2Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signalsDIRECTV GROUP INC·Filed 2003·Granted Mar 11, 2008·5 cites·24 claims
- 1562US6510147B1Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signalsHUGHES ELECTRONICS CORP·Filed 1998·Granted Jan 21, 2003·32 cites·6 claims
- 1659US8179781B2Method and apparatus for encoding data for transmission in a communication systemSUN FENG-WEN·Filed 2007·Granted May 15, 2012·1 cites·18 claims
- 1756US6741581B1System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data framesHUGHES ELECTRONICS CORP·Filed 1999·Granted May 25, 2004·31 cites·26 claims
- 1856US6178334B1Cellular/PCS network with distributed-RF base stationHUGHES ELECTRONICS CORP·Filed 1998·Granted Jan 23, 2001·41 cites·13 claims
- 1946US2002181551A1Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmissionHUGHES ELECTRONICS CORP·Filed 2002·Application pending·0 cites
- 2045US7317710B2Method and apparatus for encoding data for transmission in a communication systemDIRECTV GROUP INC·Filed 2002·Granted Jan 8, 2008·0 cites·17 claims
- 2141US2003224723A1Method and system for providing two-way communication using an overlay of signals over a non-linear communications channelFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →