Assignee
ZENITH RADIO CORP
476 granted patents·9,846 citations·filing 1951–1985
Top patents by PatentIndex Score
476 records- 0198US4600921AFull-field teletext system with dynamic addressabilityZENITH RADIO CORP·Filed 1983·Granted Jul 15, 1986·281 cites·21 claims
- 0298US4456925ATelevision/telephone system with automatic dialingZENITH RADIO CORP·Filed 1982·Granted Jun 26, 1984·414 cites·18 claims
- 0398US4375651ASelective video reception control systemZENITH RADIO CORP·Filed 1981·Granted Mar 1, 1983·356 cites·15 claims
- 0498US4356509AMicrocomputer-controlled television/telephone system and method thereforeZENITH RADIO CORP·Filed 1981·Granted Oct 26, 1982·351 cites·32 claims
- 0598US4233628ANTSC receiver useable with Teletext/Viewdata informationZENITH RADIO CORP·Filed 1979·Granted Nov 11, 1980·256 cites·13 claims
- 0697US4461032ACATV Service controllerZENITH RADIO CORP·Filed 1982·Granted Jul 17, 1984·149 cites·8 claims
- 0797US4393376ATeletext interface for digital storage medium having synthetic video generatorZENITH RADIO CORP·Filed 1981·Granted Jul 12, 1983·189 cites·12 claims
- 0897US4388645ATeletext communication system with timed multipage local memoryZENITH RADIO CORP·Filed 1981·Granted Jun 14, 1983·245 cites·20 claims
- 0996US4374437AVariable ramp speed TV tuning system for rapid channel tuningZENITH RADIO CORP·Filed 1980·Granted Feb 15, 1983·118 cites·5 claims
- 1096US4292650AStv Subscriber address systemZENITH RADIO CORP·Filed 1979·Granted Sep 29, 1981·159 cites·20 claims
- 1196US4279035AChannel number entry systemZENITH RADIO CORP·Filed 1979·Granted Jul 14, 1981·48 cites·11 claims
- 1295US4458268ASync displacement scramblingZENITH RADIO CORP·Filed 1982·Granted Jul 3, 1984·116 cites·11 claims
- 1395US4449145AIntelligent teletext decoderZENITH RADIO CORP·Filed 1983·Granted May 15, 1984·112 cites·10 claims
- 1495US4393404ASpecial services teletext communications systemZENITH RADIO CORP·Filed 1981·Granted Jul 12, 1983·140 cites·6 claims
- 1595US4374609AImage projection screen with decreased color shift as a function of viewing angle, and method of manufactureZENITH RADIO CORP·Filed 1981·Granted Feb 22, 1983·43 cites·9 claims
- 1695US4303940ARaster manipulated television receiverZENITH RADIO CORP·Filed 1980·Granted Dec 1, 1981·113 cites·7 claims
- 1795US3932700AFocus tracking registration for optical reproducing systemsZENITH RADIO CORP·Filed 1974·Granted Jan 13, 1976·54 cites·8 claims
- 1894US4388639AColor control circuit for teletext-type decoderZENITH RADIO CORP·Filed 1981·Granted Jun 14, 1983·111 cites·5 claims
- 1994US4359778AChannel equalizer and method for cancelling ghostsZENITH RADIO CORP·Filed 1981·Granted Nov 16, 1982·87 cites·13 claims
- 2094US4333109AIntelligent teletext decoderZENITH RADIO CORP·Filed 1980·Granted Jun 1, 1982·106 cites·12 claims
- 2194US4091418AAutomatic channel equalization with time base expansionZENITH RADIO CORP·Filed 1977·Granted May 23, 1978·79 cites·19 claims
- 2294US4069567AMethod of installing a color selection electrode in a color cathode ray tubeZENITH RADIO CORP·Filed 1977·Granted Jan 24, 1978·43 cites·4 claims
- 2393US4368485ABillboard large screen TVZENITH RADIO CORP·Filed 1981·Granted Jan 11, 1983·96 cites·13 claims
- 2493US4173737ALimited position, non-volatile memory tuning systemZENITH RADIO CORP·Filed 1978·Granted Nov 6, 1979·55 cites·10 claims
- 2592US4426662AIR Remote control detector/decoderZENITH RADIO CORP·Filed 1982·Granted Jan 17, 1984·68 cites·7 claims
- 2692US4410823ASurface acoustic wave device employing reflectorsZENITH RADIO CORP·Filed 1981·Granted Oct 18, 1983·45 cites·2 claims
- 2792US4399419ALine isolation and interference shielding for a shielded conductor systemZENITH RADIO CORP·Filed 1981·Granted Aug 16, 1983·46 cites·56 claims
- 2892US4380828AUHF MOSFET MixerZENITH RADIO CORP·Filed 1981·Granted Apr 19, 1983·79 cites·8 claims
- 2992US4253108AControl for color killer and automatic color limiterZENITH RADIO CORP·Filed 1979·Granted Feb 24, 1981·75 cites·15 claims
- 3092US3995194AElectron gun having an extended field electrostatic focus lensZENITH RADIO CORP·Filed 1974·Granted Nov 30, 1976·33 cites·25 claims
- 3191US4370675ADoorbell actuated television security systemZENITH RADIO CORP·Filed 1981·Granted Jan 25, 1983·69 cites·7 claims
- 3290US4425647AIR Remote control systemZENITH RADIO CORP·Filed 1982·Granted Jan 10, 1984·83 cites·2 claims
- 3390US4338492ATelevision receiver with two-way telephone conversation capabilityZENITH RADIO CORP·Filed 1980·Granted Jul 6, 1982·82 cites·2 claims
- 3490US4193120AAddressable event display and control systemZENITH RADIO CORP·Filed 1978·Granted Mar 11, 1980·116 cites·9 claims
- 3590US4101803AArc suppression and static elimination system for a television crtZENITH RADIO CORP·Filed 1977·Granted Jul 18, 1978·30 cites·8 claims
- 3690US4100451AFace panel assembly for a color cathode ray tubeZENITH RADIO CORP·Filed 1976·Granted Jul 11, 1978·29 cites·23 claims
- 3790US3980819AEdge enhancement for television imagesZENITH RADIO CORP·Filed 1974·Granted Sep 14, 1976·39 cites·29 claims
- 3890US3935566AMultiple-channel information translation system and methodZENITH RADIO CORP·Filed 1973·Granted Jan 27, 1976·45 cites·11 claims
- 3989US4183125AMethod of making an insulator-support for luminescent display panels and the likeZENITH RADIO CORP·Filed 1976·Granted Jan 15, 1980·44 cites·14 claims
- 4089US4096542AController for video tape recorderZENITH RADIO CORP·Filed 1977·Granted Jun 20, 1978·112 cites·5 claims
- 4188US4374399AInsertion of non-synchronous data into vertical intervalZENITH RADIO CORP·Filed 1981·Granted Feb 15, 1983·48 cites·16 claims
- 4288US4017129ATelevision receiver cabinet with formed decorative frontZENITH RADIO CORP·Filed 1975·Granted Apr 12, 1977·42 cites·7 claims
- 4388US3962722AColor television setup apparatus and methodZENITH RADIO CORP·Filed 1974·Granted Jun 8, 1976·34 cites·14 claims
- 4488US3952159ADucted port reflex enclosureZENITH RADIO CORP·Filed 1974·Granted Apr 20, 1976·42 cites·1 claims
- 4588US3944867AShadow mask having ribs bounding rectangular aperturesZENITH RADIO CORP·Filed 1974·Granted Mar 16, 1976·27 cites·2 claims
- 4688US3931460AVideo disc with multiturn undulating storage trackZENITH RADIO CORP·Filed 1974·Granted Jan 6, 1976·31 cites·2 claims
- 4787US4446443AAmplifier having reduced power dissipation and improved slew rateZENITH RADIO CORP·Filed 1982·Granted May 1, 1984·32 cites·12 claims
- 4887US4349701ATelevision receiver with two-way telephone conversation and dial-out capabilitiesZENITH RADIO CORP·Filed 1980·Granted Sep 14, 1982·61 cites·1 claims
- 4987US4099082AStacked lattice spacer support for luminescent display panelsZENITH RADIO CORP·Filed 1976·Granted Jul 4, 1978·31 cites·14 claims
- 5087US4091410AFrequency and phase lock loop synchronous detecting system having a pair of phase lock conditionsZENITH RADIO CORP·Filed 1976·Granted May 23, 1978·35 cites·9 claims
Showing the top 50 of 476 patent records by PatentIndex Score.
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