Issued Patents All Time
Showing 226–250 of 414 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6133788 | Hybrid Chireix/Doherty amplifiers and methods | — | 2000-10-17 |
| 6122500 | Cordless time-duplex phone with improved hearing-aid compatible mode | Anders Torstensson | 2000-09-19 |
| 6112094 | Orthogonal frequency hopping pattern re-use scheme | — | 2000-08-29 |
| 6098878 | Tariff management apparatus and method for communications terminals using smart cards | Elizabeth Louise Humphreys | 2000-08-08 |
| 6097615 | Power waveform synthesis using bilateral devices | — | 2000-08-01 |
| 6097974 | Combined GPS and wide bandwidth radiotelephone terminals and methods | William O. Camp, Jr., Robert Ray Horton | 2000-08-01 |
| 6091954 | Channel assignment in enhanced fixed-plan mobile communications systems | Jacobus Cornelis Haartsen | 2000-07-18 |
| 6091303 | Method and apparatus for reducing oscillator noise by noise-feedforward | — | 2000-07-18 |
| 6088593 | Two-way paging system and apparatus | — | 2000-07-11 |
| 6084865 | Dual mode satellite/cellular terminal | — | 2000-07-04 |
| 6078826 | Mobile telephone power savings method and apparatus responsive to mobile telephone location | Thomas M. Croft | 2000-06-20 |
| 6067363 | Audio A/D convertor using frequency modulation | — | 2000-05-23 |
| 6061568 | Method and apparatus for mitigating intermodulation effects in multiple-signal transmission systems | — | 2000-05-09 |
| 6047029 | Post-filtered delta sigma for controlling a phase locked loop modulator | Håkan Eriksson, Kjell Gustafsson | 2000-04-04 |
| 6047169 | Radio communications device with reference-compensated power down control and methods of operating thereof | — | 2000-04-04 |
| 6046990 | High-penetration transmission method for a radiocommunication system | Sandeep Chennakeshu, Nils Rydbeck, Amer A. Hassan | 2000-04-04 |
| 6044485 | Transmitter method and transmission system using adaptive coding based on channel characteristics | Amer A. Hassan | 2000-03-28 |
| 6034987 | System for improving the quality of a received radio signal | Sandeep Chennakeshu, Gregory E. Bottomley | 2000-03-07 |
| 6025816 | Antenna system for dual mode satellite/cellular portable phone | Amer A. Hassan, James D. MacDonald, Jr., Yawei Ma | 2000-02-15 |
| 6023477 | System and method of time and frequency synchronization in a radiocommunication system | — | 2000-02-08 |
| 6012160 | Method for protecting important data bits using less important data bits | — | 2000-01-04 |
| 6011786 | Systems and methods for control channel communication in cellular radiotelephone systems | — | 2000-01-04 |
| 6005887 | Despreading of direct sequence spread spectrum communications signals | Gregory E. Bottomley, Rajaram Ramesh, Sandeep Chennakeshu | 1999-12-21 |
| 5995547 | Method and apparatus for mapping between cellular bit streams and wireline waveforms | — | 1999-11-30 |
| 5991635 | Reduced power sleep modes for mobile telephones | Nils Rydbeck, A. Krister Raith, Francois Sawyer | 1999-11-23 |