Assignee
SANSUI ELECTRIC CO
JP·69 granted patents·1,223 citations·filing 1973–1991
Top patents by PatentIndex Score
69 records- 0199USD254616SHead phoneSANSUI ELECTRIC CO·Filed 1977·Granted Apr 1, 1980·99 cites·1 claims
- 0299USD246519SHead phoneSANSUI ELECTRIC CO·Filed 1976·Granted Nov 29, 1977·105 cites·1 claims
- 0394USD253289SControl knob for audio apparatusSANSUI ELECTRIC CO·Filed 1977·Granted Oct 30, 1979·31 cites·1 claims
- 0494US4016366ACompatible stereophonic receiverSANSUI ELECTRIC CO·Filed 1975·Granted Apr 5, 1977·105 cites·8 claims
- 0593USD247488SRecord playerSANSUI ELECTRIC CO·Filed 1975·Granted Mar 14, 1978·42 cites·1 claims
- 0692USD248471SSpeaker cabinetSANSUI ELECTRIC CO·Filed 1976·Granted Jul 11, 1978·39 cites·1 claims
- 0789US4118605ACoil mount structureSANSUI ELECTRIC CO·Filed 1978·Granted Oct 3, 1978·57 cites·15 claims
- 0889USD249143SRecord playerSANSUI ELECTRIC CO·Filed 1976·Granted Aug 29, 1978·26 cites·1 claims
- 0988US4216517AProtection circuit for power amplifierSANSUI ELECTRIC CO·Filed 1978·Granted Aug 5, 1980·26 cites·6 claims
- 1084USD252393SRecord playerSANSUI ELECTRIC CO·Filed 1977·Granted Jul 17, 1979·26 cites·1 claims
- 1182US4105946AFrequency synthesizer with phase locked loop and counterSANSUI ELECTRIC CO·Filed 1977·Granted Aug 8, 1978·29 cites·20 claims
- 1281US3934086AMatrix four-channel decoding systemSANSUI ELECTRIC CO·Filed 1974·Granted Jan 20, 1976·26 cites·3 claims
- 1380US4633483ANear-instantaneous companding PCM involving accumulation of less significant bits removed from original dataSANSUI ELECTRIC CO·Filed 1984·Granted Dec 30, 1986·32 cites·19 claims
- 1478US4229705ADifferential amplifiersSANSUI ELECTRIC CO·Filed 1978·Granted Oct 21, 1980·18 cites·6 claims
- 1577USD243794SCombined amplifier and tunerSANSUI ELECTRIC CO·Filed 1975·Granted Mar 22, 1977·12 cites·1 claims
- 1675US4058675ALoudspeaker system for use in a stereophonic sound reproduction systemSANSUI ELECTRIC CO·Filed 1976·Granted Nov 15, 1977·41 cites·10 claims
- 1773US4585952ADigital waveform shaping circuitSANSUI ELECTRIC CO·Filed 1983·Granted Apr 29, 1986·18 cites·10 claims
- 1873USD253109SSpeaker box with removable grillSANSUI ELECTRIC CO·Filed 1977·Granted Oct 9, 1979·14 cites·1 claims
- 1971US4580278ARead clock producing systemSANSUI ELECTRIC CO·Filed 1983·Granted Apr 1, 1986·16 cites·5 claims
- 2071US4193076ACoupling an outer antenna with a radio receiver having a bar antennaSANSUI ELECTRIC CO·Filed 1978·Granted Mar 11, 1980·24 cites·9 claims
- 2170USD250535SCombined tuner and amplifierSANSUI ELECTRIC CO·Filed 1977·Granted Dec 12, 1978·9 cites·1 claims
- 2270USD249946SAmplifierSANSUI ELECTRIC CO·Filed 1976·Granted Oct 17, 1978·10 cites·1 claims
- 2369US4546394ASignal reconstruction circuit for digital signalsSANSUI ELECTRIC CO·Filed 1983·Granted Oct 8, 1985·14 cites·7 claims
- 2469US4117406AMuting arrangement for am synchronous detector using a pll circuitSANSUI ELECTRIC CO·Filed 1977·Granted Sep 26, 1978·12 cites·7 claims
- 2569US4079204AAM Stereophonic transmission systemSANSUI ELECTRIC CO·Filed 1976·Granted Mar 14, 1978·17 cites·4 claims
- 2668US4626936ARelative velocity control device for magnetic recording and reproducing apparatusSANSUI ELECTRIC CO·Filed 1985·Granted Dec 2, 1986·17 cites·7 claims
- 2768US4401951ABias circuit for use in a single-ended push-pull circuitSANSUI ELECTRIC CO·Filed 1980·Granted Aug 30, 1983·13 cites·8 claims
- 2868US4367442ADistortion correction circuit for a power amplifierSANSUI ELECTRIC CO·Filed 1980·Granted Jan 4, 1983·13 cites·18 claims
- 2968US3962544ASound reproducing devicesSANSUI ELECTRIC CO·Filed 1974·Granted Jun 8, 1976·14 cites·12 claims
- 3065US3952157AMatrix four-channel decoding systemSANSUI ELECTRIC CO·Filed 1974·Granted Apr 20, 1976·13 cites·14 claims
- 3164US4135162APower amplifier circuitsSANSUI ELECTRIC CO·Filed 1977·Granted Jan 16, 1979·10 cites·5 claims
- 3264USD250534SCombined tuner and amplifierSANSUI ELECTRIC CO·Filed 1977·Granted Dec 12, 1978·7 cites·1 claims
- 3363US4029906AAutomatic noise reduction system of FM stereo receiverSANSUI ELECTRIC CO·Filed 1976·Granted Jun 14, 1977·17 cites·10 claims
- 3462US4759038APCM transmission systemSANSUI ELECTRIC CO·Filed 1985·Granted Jul 19, 1988·17 cites·9 claims
- 3561USD250759STape deckSANSUI ELECTRIC CO·Filed 1977·Granted Jan 9, 1979·7 cites·1 claims
- 3661USD249146STunerSANSUI ELECTRIC CO·Filed 1976·Granted Aug 29, 1978·6 cites·1 claims
- 3759US5206466ADiaphragm for speakerSANSUI ELECTRIC CO·Filed 1991·Granted Apr 27, 1993·38 cites·5 claims
- 3858USD247749STunerSANSUI ELECTRIC CO·Filed 1976·Granted Apr 18, 1978·6 cites·1 claims
- 3957US4144463AStabilized DC power supply devices for providing a plurality of DC power outputs which are selectively consumedSANSUI ELECTRIC CO·Filed 1977·Granted Mar 13, 1979·14 cites·15 claims
- 4057US3959700ASpeed control device for transistor motorSANSUI ELECTRIC CO·Filed 1974·Granted May 25, 1976·11 cites·2 claims
- 4155US3991382AOscillation frequency control device for a local oscillatorSANSUI ELECTRIC CO·Filed 1975·Granted Nov 9, 1976·11 cites·5 claims
- 4254US4158795ABrushless DC motorsSANSUI ELECTRIC CO·Filed 1977·Granted Jun 19, 1979·15 cites·4 claims
- 4354US4135164ASynchronous generating circuit devices with two phase-locked loops and feedback around bothSANSUI ELECTRIC CO·Filed 1977·Granted Jan 16, 1979·10 cites·11 claims
- 4452US3982069ADecoding apparatus for use in matrix four channel systems of a plurality of typesSANSUI ELECTRIC CO·Filed 1975·Granted Sep 21, 1976·9 cites·6 claims
- 4550US4021612ADecoder apparatus applicable to matrix 4-channel systems of different typesSANSUI ELECTRIC CO·Filed 1975·Granted May 3, 1977·8 cites·3 claims
- 4649US4425638ADual turntable record player with torque cancellationSANSUI ELECTRIC CO·Filed 1981·Granted Jan 10, 1984·6 cites·11 claims
- 4747US3937422AMagnetic tape recording and reproducing machinesSANSUI ELECTRIC CO·Filed 1973·Granted Feb 10, 1976·7 cites·7 claims
- 4846US4517528AAmplifier circuit driven by ground isolated power supplySANSUI ELECTRIC CO·Filed 1982·Granted May 14, 1985·5 cites·10 claims
- 4944US4177360AMoving magnet type pickup cartridgeSANSUI ELECTRIC CO·Filed 1977·Granted Dec 4, 1979·11 cites·12 claims
- 5044USD242638SAmplifierSANSUI ELECTRIC CO·Filed 1975·Granted Dec 7, 1976·3 cites·1 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →