| Patents for H03F 7 - Parametric amplifiers (152) | |
|---|---|
| 08/2000 | |
| 08/29/2000 | US6111782 Magnetoresistance effect device, and magnetoresistance effect type head, memory device, and amplifying device using the same |
| 02/2000 | |
| 02/08/2000 | US6023062 Method and device for converting infra-red radiation into electric signals with high amplification |
| 12/1999 | |
| 12/21/1999 | US6005798 Magnetoresistance effect device, and magnetoresistance effect type head, memory device, and amplifying device using the same |
| 11/1998 | |
| 11/24/1998 | US5841611 Magnetoresistance effect device and magnetoresistance effect type head, memory device, and amplifying device using the same |
| 01/1998 | |
| 01/02/1998 | DE19625461A1 Method for high gain conversion of IR radiation to electrical signal |
| 11/1997 | |
| 11/13/1997 | DE19617549A1 Multiple nano crystalline coaxial amplifier |
| 11/06/1997 | WO1997041637A1 Method for the amplification of amplitude-modulated phase-keyed signals and device for realising the same |
| 04/1996 | |
| 04/24/1996 | CN1121252A Magnetoresistance effect device, and magnetoresistance effect type head, memory device, and amplifying device using the same |
| 11/1995 | |
| 11/08/1995 | EP0681338A1 Magnetoresistance effect device and magnetoresistance effect type head, memory device, and amplifying device using the same |
| 10/1990 | |
| 10/23/1990 | CA1275419C Second harmonic generation with schiff bases |
| 03/1988 | |
| 03/22/1988 | US4733109 Second harmonic generation with Schiff bases |
| 01/1988 | |
| 01/07/1988 | EP0250448A1 Device for removing static charge, dust and lint from surfaces |
| 09/1987 | |
| 09/09/1987 | EP0235955A2 Second harmonic generation with schiff bases |
| 05/1987 | |
| 05/07/1987 | WO1987002845A1 Device for removing static charge, dust and lint from surfaces |
| 01/1987 | |
| 01/06/1987 | US4635161 Device for removing static charge, dust and lint from surfaces |
| 09/1985 | |
| 09/24/1985 | US4543533 Parametric amplifier |
| 11/1984 | |
| 11/27/1984 | US4485488 Microwave subharmonic mixer device |
| 11/20/1984 | CA1178344A1 Distributed array of josephson devices with coherence |
| 09/1984 | |
| 09/11/1984 | US4471255 Surface acoustic wave parametric device |
| 08/1983 | |
| 08/31/1983 | EP0086793A1 Electrical converter |
| 06/1983 | |
| 06/07/1983 | US4387470 Receiver input stage with an improvement of the signal to noise ratio |
| 05/1983 | |
| 05/04/1983 | EP0078187A2 High-frequency subharmonic mixing device, and its use in a h.f. frequency-converter |
| 04/1983 | |
| 04/19/1983 | US4380744 Stabilized oscillator for microwaves with frequency conversion and its solid state construction |
| 02/1983 | |
| 02/17/1983 | WO1983000589A1 Electrical converter |
| 01/1983 | |
| 01/18/1983 | CA1139846A1 Receiver input circuit |
| 12/1982 | |
| 12/21/1982 | US4365216 Surface-acoustic-wave device |
| 11/1982 | |
| 11/30/1982 | US4361814 Distributed optical parametric amplifier |
| 08/1982 | |
| 08/10/1982 | US4344052 Distributed array of Josephson devices with coherence |
| 07/1982 | |
| 07/27/1982 | CA1128632A1 2-methyl-4-nitro-aniline nonlinear optical devices |
| 04/1982 | |
| 04/07/1982 | EP0048813A2 Distributed array of coherently operating Josephson devices |
| 12/1981 | |
| 12/08/1981 | CA1114023A1 Microwave input circuit with parametric down converter |
| 03/1981 | |
| 03/03/1981 | US4254388 Frequency selector apparatus |
| 01/1981 | |
| 01/07/1981 | EP0021909A1 Stabilised hyperfrequency oscillator with frequency conversion and its solid state realisation |
| 01/07/1981 | EP0021426A1 Microwave and millimeter wave mixer |
| 11/1980 | |
| 11/11/1980 | US4233530 Elastic surface wave device |
| 09/1980 | |
| 09/16/1980 | CA1085937A1 Balanced synchronous parametric amplifier |
| 09/16/1980 | CA1085936A1 Balanced-diode parametric amplifier |
| 06/1980 | |
| 06/12/1980 | WO1980001225A1 2-methyl-4-nitro-aniline nonlinear optical devices |
| 04/1980 | |
| 04/22/1980 | US4199698 Second harmonic generators, optical mixers, and parametric oscillators |
| 07/1979 | |
| 07/03/1979 | US4160215 Single diode upper sideband terminated parametric amplifier |
| 06/1979 | |
| 06/19/1979 | US4158817 Microwave input circuit with parametric down converter |
| 06/12/1979 | US4158177 Parametric coupling device for traveling-waves |
| 02/1979 | |
| 02/06/1979 | US4138648 Balanced synchronous parametric amplifier |
| 01/1979 | |
| 01/02/1979 | US4132956 Circuit arrangement for amplifying high frequency electromagnetic waves |
| 12/1978 | |
| 12/26/1978 | US4131858 Beam lead dual parametric amplifier |
| 08/1977 | |
| 08/30/1977 | US4045705 Electron bombarded semiconductor device |
| 06/1977 | |
| 06/14/1977 | US4030049 Broadband low noise parametric amplifier |
| 02/1977 | |
| 02/01/1977 | US4006363 Gaseous infrared waveguide mixer |
| 11/1976 | |
| 11/16/1976 | US3992675 Broadband, upper sideband terminated, low-noise parametric amplifier |
| 11/09/1976 | US3991373 Input circuit for a microwave receiving system |
| 02/1976 | |
| 02/10/1976 | US3937979 Photoparametric amplifying upconverter |
| 01/1976 | |
| 01/20/1976 | US3934208 Low noise modular parametric amplifier |
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