| Patents for H04B 15 - Suppression or limitation of noise or interference (10,227) |
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| 11/19/1986 | CN85103670A Anti-interference method for mirrior frequency by mirrior-frequency rejector |
| 10/28/1986 | US4620165 Electrical suppressor filter |
| 09/30/1986 | US4614924 Apparatus for screening appliances from high frequency interference |
| 09/09/1986 | US4611185 Electrical noise filter |
| 08/20/1986 | CN85201156U Constant amplitude-narrow band carrier shift printing terminal |
| 08/05/1986 | CA1209223A1 Adaptive echo cancelling system and method utilizing linear code spacing |
| 07/22/1986 | CA1208296A1 Dual-antenna transceiver |
| 07/22/1986 | CA1208280A1 Radio frequency interference radiation suppressing ignition system |
| 06/11/1986 | EP0184383A2 A wireless PBX/LAN system with optimum combining |
| 06/05/1986 | WO1986003354A1 An arrangement for eliminating signal hum |
| 05/27/1986 | US4591510 Chelating agent, crosslinkable polymer and high dielectric solvent |
| 05/20/1986 | US4590616 Re-tuning device comprising a switching mixer stage and a tuning oscillator |
| 05/20/1986 | CA1204871A1 Averaging method for periodic strays elimination and the counting circuit for evoked responses measuring set-up for applying the method |
| 04/22/1986 | US4584712 Interference signal supressor system |
| 04/16/1986 | EP0177760A1 Beads attenuator suppressing unwanted radiation, in particular in the short wave and ultra short wave range |
| 04/08/1986 | US4581596 Interference suppression filter |
| 04/08/1986 | CA1203010A1 Portable radio device for protecting a radio circuit from static electricity |
| 04/02/1986 | EP0176098A2 Digital transmission system |
| 03/18/1986 | US4577258 Decoupled integrated circuit package |
| 03/11/1986 | CA1201783A1 Digital transmission systems |
| 02/18/1986 | US4571561 Noise reduction filter |
| 12/31/1985 | US4562492 Noise reduction circuit |
| 12/31/1985 | CA1198778A1 Radio transmitter/receivers |
| 12/10/1985 | US4557177 Electromechanical actuator |
| 12/04/1985 | EP0163313A2 Method and apparatus for spectral dispersion of the radiated energy from a digital system |
| 10/01/1985 | US4545072 Method and apparatus for eliminating interference due to spurious signals generated in synthesized receivers |
| 09/24/1985 | US4543554 System for the elimination of radio interference and method for its manufacture |
| 09/17/1985 | US4542532 Dual-antenna transceiver |
| 09/17/1985 | US4542531 Radio transmitter/receivers with non interferring local oscillator frequency |
| 09/12/1985 | WO1985004006A1 Electromagnetic interference supression for electrical discharge printers |
| 09/11/1985 | EP0154563A2 Dual-antenna transceiver |
| 09/11/1985 | EP0154489A2 Electromagnetic interference suppression for electrical discharge printers |
| 08/21/1985 | EP0151656A1 Averaging method for elimination of periodic strays and a circuit arrangement for applying the method |
| 08/13/1985 | CA1191917A1 Data encoding and synchronization for pulse telemetry |
| 08/07/1985 | EP0150246A1 Averaging method for elimination of periodic strays and a circuit arrangement for applying the method |
| 07/17/1985 | EP0148411A1 Household laundry appliance having a commutable electric motor |
| 06/05/1985 | EP0143485A1 Method and circuit arrangement for increasing the signal-to-noise ratio of a periodic electrical signal |
| 04/16/1985 | US4511847 Filter assembly for eliminating mains disturbances |
| 03/26/1985 | US4507796 Electronic apparatus having low radio frequency interference from system clock signal |
| 02/26/1985 | US4502101 Decoupled integrated circuit package |
| 01/23/1985 | EP0132010A1 RF-tuning device comprising a switching mixer stage and a tuning oscillator |
| 01/09/1985 | EP0130613A2 Noise reduction circuit |
| 01/02/1985 | CA1180440A Electronic noise reducing apparatus and method |
| 11/06/1984 | US4481426 Signal transmitting system having spurious radiation preventing function |
| 10/31/1984 | EP0123213A1 Electrical interference filter |
| 10/23/1984 | US4479246 Communication system to simultaneously operate a plurality of RF transceivers in a confined area |
| 10/09/1984 | US4476539 Transversal type smear-desmear filter |
| 09/25/1984 | US4473755 Device for preventing noise leakage and manufacturing method of the device |
| 09/25/1984 | CA1175114A1 Transversal type smear-desmear filter |
| 09/18/1984 | US4472693 Noise filter and terminal structure therefor |
| 09/18/1984 | CA1174745A1 Interference cancellation method and apparatus |
| 08/28/1984 | US4468537 Sound system having suppression of AM stereophonic receiving circuit-induced noise |
| 07/24/1984 | CA1171537A1 Method and apparatus for processing a digital signal for transmission |
| 07/18/1984 | EP0113465A1 Electrical interference elimination filter |
| 06/19/1984 | US4455638 RF Radial choke for use in record playback apparatus |
| 05/15/1984 | US4449090 Charging generator for vehicles |
| 04/03/1984 | US4441184 Method and apparatus for transmitting a digital signal |
| 03/27/1984 | CA1164351A2 Multiple variable threshold speech detector |
| 11/09/1983 | EP0093403A2 Radio frequency interference radiation suppressing ignition system |
| 10/25/1983 | US4412341 Interference cancellation method and apparatus |
| 09/28/1983 | EP0089649A2 Radio transmitter/receiver |
| 09/06/1983 | US4403350 Interference avoidance electronic system for an automotive vehicle |
| 08/09/1983 | US4398106 On-chip Delta-I noise clamping circuit |
| 08/02/1983 | CA1151245A1 Receiver for phase shift modulated carrier signals |
| 06/21/1983 | CA1148626A1 Line isolation and interference shielding for a shielded conductor system |
| 05/26/1983 | WO1983001879A1 Interference cancellation method and apparatus |
| 05/17/1983 | US4384331 Noise suppressor for vehicle digital system |
| 05/04/1983 | EP0077979A1 Method and circuit for the compensation of induced interference voltages |
| 02/15/1983 | US4374369 Electromagnetic interference elimination filter |
| 02/08/1983 | CA1140983A1 Capacitive noise filter |
| 02/01/1983 | US4371441 Process and apparatus for the separation of immiscible liquid mixtures |
| 12/28/1982 | CA1138525A1 Radio frequency interference suppression apparatus |
| 11/09/1982 | CA1135363A1 Noise tolerant multiplex system |
| 08/24/1982 | CA1130369A1 Arrangement for suppressing high frequency currents in bearings of shafts |
| 08/18/1982 | EP0057832A2 Arrangement for radio interference suppression and method of manufacturing |
| 07/20/1982 | CA1128161A1 Intrusion detector for press brake |
| 06/30/1982 | EP0054642A2 Noise clamping circuit |
| 05/11/1982 | US4329733 Capacitor combined shield case |
| 04/20/1982 | US4326295 Television tuner circuit |
| 12/08/1981 | US4305091 Electronic noise reducing apparatus and method |
| 11/18/1981 | EP0039764A1 Circuit for radio noise suppression of a series motor |
| 09/30/1981 | EP0036746A2 Method and apparatus for line isolation and interference shielding for a shielded conductor system |
| 09/15/1981 | US4290144 Radio communications systems |
| 09/15/1981 | CA1109120A1 Arrangement for suppressing high frequency currents in bearings of shafts |
| 08/18/1981 | US4284057 Antiparasitic ignition device for cars |
| 07/28/1981 | CA1106002A1 Impulse noise limiter circuit |
| 06/30/1981 | US4276640 Noise tolerant multiplex system |
| 06/23/1981 | CA1103763A1 Signal injection technique |
| 05/19/1981 | US4268758 Arrangement for suppressing high frequency currents in bearings of shafts |
| 05/12/1981 | US4267596 Digital memory system |
| 05/12/1981 | US4267528 Radio frequency interference suppression apparatus |
| 05/12/1981 | US4267461 Arrangement for suppressing high frequency currents in bearings of shafts |
| 04/28/1981 | CA1100173A1 Internal combustion engine ignition noise preventing device |
| 12/23/1980 | US4241395 Non-dissipative DC active filter and transformer |
| 11/26/1980 | EP0019437A1 Radio frequency interference suppression apparatus |
| 11/18/1980 | US4234964 Radio receiver monitoring and testing apparatus |
| 09/16/1980 | US4223245 Magnetron device exhibiting reduced microwave leakage |
| 06/25/1980 | EP0012629A1 Electrical reactors |
| 05/20/1980 | CA1078063A1 Noise reduction circuit |
| 05/06/1980 | CA1077171A1 Electronic postal meter having noise-rejecting input/output channel |