Khalid Karimullah
19Patents
11h-index
9Co-inventors
65Inventor score
Filing activity: Mar 16, 1993 → Aug 3, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5343493A | Personal assistance system and method for use with a cellular communication system | Electricity | 323 | Expired |
| US6539050B1 | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission | Electricity | 54 | Expired |
| US6178334A | Cellular/PCS network with distributed-RF base station | Electricity | 27 | Expired |
| US5423081A | Cellular power amplifier power level control circuitry | Electricity | 27 | Expired |
| US6351240B1 | Circularly polarized reflect array using 2-bit phase shifter having initial phase perturbation | Electricity | 25 | Expired |
| US6510147B1 | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals | Electricity | 18 | Expired |
| US6940809B2 | System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames | Electricity | 16 | Expired |
| US6738366B1 | SYSTEM 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 CHANNEL | Electricity | 14 | Expired |
| US6396822B1 | Method and apparatus for encoding data for transmission in a communication system | Electricity | 12 | Expired |
| US7492749B2 | Method and system for providing multi-input-multi-output (MIMO) downlink transmission | Electricity | 11 | Expired |
| US6741581B1 | System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames | Electricity | 11 | Expired |
| US8902840B2 | Method and system for providing multi-input-multi-output (MIMO) downlink transmission | Electricity | 2 | Active |
| US7483490B2 | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission | Electricity | 2 | Expired |
| US8243706B2 | Method and system for providing multi-input-multi-output (MIMO) downlink transmission | Electricity | 2 | Active |
| US7342904B2 | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals | Electricity | 2 | Expired |
| US8179781B2 | Method and apparatus for encoding data for transmission in a communication system | Electricity | 1 | Active |
| US7505440B2 | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals | Electricity | 1 | Active |
| US9467200B2 | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals | Electricity | 1 | Active |
| US7317710B2 | Method and apparatus for encoding data for transmission in a communication system | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.