Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618671 | Method of determining the position of a mobile unit | Saul Dooley, Andrew T. Yule | 2003-09-09 |
| 6597900 | Circuit arrangement providing impedance translation filtering | Brian J. Minnis | 2003-07-22 |
| 6590365 | Method of powering-up battery powered apparatus | Paul Marshall | 2003-07-08 |
| 5991607 | Telecommunication device with switching arrangement constructed as a ring circuit | Ralf Burdenski | 1999-11-23 |
| 5852634 | Data coding system | — | 1998-12-22 |
| 5832374 | Radio transceiver including transmitter power control circuit | Winfrid Birth, Erich Saur | 1998-11-03 |
| 5678199 | Transceiver with controlled transmit/receive impedance switching device | Winfried Birth, Erich Saur, Holger Morbitzer | 1997-10-14 |
| 5502744 | Data coding system | — | 1996-03-26 |
| 5008849 | Apparatus adding values represented as residues in modulo arithmetic | Ian A. Burgess, Andrew M. Dennis | 1991-04-16 |
| 4994994 | Apparatus performing modulo p addition, where operands are expressed as powers of a generator, using a reduced size zech look-up table | Ian A. Burgess | 1991-02-19 |
| 4864643 | Radio transmission system providing adjacent channel and image frequency rejection | Richard C. French | 1989-09-05 |
| 4768187 | Signal transmission system and a transmitter and a receiver for use in the system | — | 1988-08-30 |
| 4723318 | Active polyphase filters | — | 1988-02-02 |
| 4713563 | d.c. Block capacitor circuit for rejection of d.c. offset | Richard C. French | 1987-12-15 |
| 4696055 | RF tuning circuit which provides image frequency rejection | — | 1987-09-22 |
| 4672636 | AFC circuit for direct modulation FM data receivers | John F. Wilson, Robert Nettleship, deceased | 1987-06-09 |
| 4523324 | Direct modulation FM data receiver | — | 1985-06-11 |
| 4488119 | FM Demodulator | — | 1984-12-11 |