Issued Patents All Time
Showing 276–300 of 414 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5844987 | Communications system and method using vehicle identifications | David G. Matthews, Amer A. Hassan | 1998-12-01 |
| 5844925 | Spiral scrambling | — | 1998-12-01 |
| 5844894 | Time-reuse partitioning system and methods for cellular radio telephone systems | — | 1998-12-01 |
| 5842115 | Time-duplex wireless telephone with improved hearing-aid compatibility | — | 1998-11-24 |
| 5841816 | Diversity Pi/4-DQPSK demodulation | Thomas M. Croft | 1998-11-24 |
| 5842140 | Waste energy control and management in power amplifiers | Ross W. Lampe | 1998-11-24 |
| 5841766 | Diversity-oriented channel allocation in a mobile communications system | Magnus Ewerbring | 1998-11-24 |
| 5839075 | Methods and systems for allocating a cellular communications channel for communication between a cellular terminal and a telephone base station using received signal strength measurements | Jacobus Haartsen | 1998-11-17 |
| 5838267 | Method and apparatus for encoding and decoding digital information | Yi-Pin Eric Wang, Sandeep Chennakeshu, Kumar Balachandran | 1998-11-17 |
| 5834987 | Frequency synthesizer systems and methods for three-point modulation with a DC response | — | 1998-11-10 |
| 5832389 | Wideband digitization systems and methods for cellular radiotelephones | — | 1998-11-03 |
| 5831977 | Subtractive CDMA system with simultaneous subtraction in code space and direction-of-arrival space | — | 1998-11-03 |
| 5826173 | Efficient paging system with sleep mode duration determined by the guaranteed number of repeats | — | 1998-10-20 |
| 5825889 | Use of duplex cipher algorithms for satellite channels with delay | — | 1998-10-20 |
| 5822310 | High power short message service using broadcast control channel | Sandeep Chennakeshu, Nils Rydbeck, Amer A. Hassan | 1998-10-13 |
| 5818298 | Linear amplifying apparatus using coupled non-linear amplifiers | Ross W. Lampe | 1998-10-06 |
| 5815531 | Transmitter for encoded data bits | — | 1998-09-29 |
| 5812544 | Dual mode portable telephone unit | — | 1998-09-22 |
| 5812539 | Dual mode satellite/cellular terminal | — | 1998-09-22 |
| 5812947 | Cellular/satellite communications systems with improved frequency re-use | — | 1998-09-22 |
| 5812955 | Base station which relays cellular verification signals via a telephone wire network to verify a cellular radio telephone | Jacobus Haartsen | 1998-09-22 |
| 5809141 | Method and apparatus for enabling mobile-to-mobile calls in a communication system | Sandeep Chennakeshu, Rajaram Ramesh, Stanley Reinhold | 1998-09-15 |
| 5790549 | Subtractive multicarrier CDMA access methods and systems | — | 1998-08-04 |
| 5790606 | Joint demodulation using spatial maximum likelihood | — | 1998-08-04 |
| 5771288 | Multiple access coding for radio communications | Gregory E. Bottomley | 1998-06-23 |