Zenith Electronics LLC
Zenith EleActive Patents
0
Total Holdings
121
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4677685A | Method and apparatus for downloading a code defining the ch… | Expired / Lapsed | 1985-07-16 | 1987-06-30 | 10 | Details |
| US4400735A | Multi-component video system controller | Expired / Lapsed | 1981-07-10 | 1983-08-23 | 14 | Details |
| US4172309A | Method of correcting deflection defocusing in self-converge… | Expired / Lapsed | 1978-07-21 | 1979-10-30 | 6 | Details |
| US4100576A | Electromagnetic optical beam controller having an eddy curr… | Expired / Lapsed | 1976-04-28 | 1978-07-11 | 3 | Details |
| US4097730A | Focus correction system for video disc player | Expired / Lapsed | 1975-07-02 | 1978-06-27 | 5 | Details |
| US4078284A | Piezoelectric substrate fabrication process | Expired / Lapsed | 1977-04-04 | 1978-03-14 | 15 | Details |
| US4053933A | Adaptive phase locked loop filter for television tuning | Expired / Lapsed | 1976-11-02 | 1977-10-11 | 13 | Details |
| US4016480A | Dual function coupling system and method | Expired / Lapsed | 1974-03-04 | 1977-04-05 | 16 | Details |
| US3956702A | Band decoder for all-channel digital tuning system | Expired / Lapsed | 1974-07-01 | 1976-05-11 | 16 | Details |
| US3935566A | Multiple-channel information translation system and method | Expired / Lapsed | 1973-10-26 | 1976-01-27 | 17 | Details |
| US3894196A | Binaural hearing aid system | Expired / Lapsed | 1974-05-28 | 1975-07-08 | 7 | Details |
| US3890829A | Method and apparatus for acoustical imaging | Expired / Lapsed | 1973-04-11 | 1975-06-24 | 10 | Details |
| US3832483A | Line sequential color video encoding with equally contribut… | Expired / Lapsed | 1972-12-27 | 1974-08-27 | 26 | Details |
| US3796495A | Apparatus and methods for scanning phase profilometry | Expired / Lapsed | 1972-05-30 | 1974-03-12 | 8 | Details |
| US3768019A | Remote control system | Expired / Lapsed | 1972-02-02 | 1973-10-23 | 8 | Details |
| US3745812A | Acoustic imaging apparatus | Expired / Lapsed | 1971-07-07 | 1973-07-17 | 19 | Details |
| US3744039A | Single-laser simultaneous multiple-channel character genera… | Expired / Lapsed | 1971-09-09 | 1973-07-03 | 29 | Details |
| US3715524A | Electro-optical groove tracking apparatus for video reprodu… | Expired / Lapsed | 1972-04-20 | 1973-02-06 | 7 | Details |
| US3672893A | Process of manufacturing screens for shadow-mask tubes | Expired / Lapsed | 1970-08-03 | 1972-06-27 | 0 | Details |
| US3662293A | Acoustic-wave transmitting device | Expired / Lapsed | 1971-03-17 | 1972-05-09 | 10 | Details |
| US3660668A | Image intensifier employing channel multiplier plate | Expired / Lapsed | 1969-09-25 | 1972-05-02 | 7 | Details |
| US3657473A | Holographic image recording and reproducing system | Expired / Lapsed | 1970-05-15 | 1972-04-18 | 12 | Details |
| US3654574A | Acoustic-wave transmitting system having curvilinear transd… | Expired / Lapsed | 1970-08-18 | 1972-04-04 | 4 | Details |
| US3647958A | Flat-panel image display with plural display devices at eac… | Expired / Lapsed | 1970-08-31 | 1972-03-07 | 14 | Details |
| US3633407A | Acoustic holography with a frequency-shifted reference beam | Expired / Lapsed | 1970-02-16 | 1972-01-11 | 9 | Details |
| US3624290A | Television receiver agc system keyed in response to time co… | Expired / Lapsed | 1969-12-30 | 1971-11-30 | 18 | Details |
| US3612657A | Light-intensity control device utilizing oriented particles… | Expired / Lapsed | 1970-06-22 | 1971-10-12 | 7 | Details |
| US3586120A | Sound propagating apparatus | Expired / Lapsed | 1968-07-16 | 1971-06-22 | 18 | Details |
| US3582783A | Multiple-function remote control system | Expired / Lapsed | 1968-12-19 | 1971-06-01 | 2 | Details |
| US3582838A | Surface wave devices | Expired / Lapsed | 1968-04-12 | 1971-06-01 | 25 | Details |
| US3571507A | Optical apparatus for developing display information signal… | Expired / Lapsed | 1968-05-15 | 1971-03-16 | 11 | Details |
| US3548360A | Terminal strip | Expired / Lapsed | 1966-02-03 | 1970-12-15 | 0 | Details |
| US3531184A | Monochromatic light beam deflection apparatus having two tr… | Expired / Lapsed | 1968-06-17 | 1970-09-29 | 0 | Details |
| US3517116A | Arrangement for converting a pal color television signal to… | Expired / Lapsed | 1967-07-21 | 1970-06-23 | 0 | Details |
| US3515458A | Radiation scanning system | Expired / Lapsed | 1967-01-13 | 1970-06-02 | 0 | Details |
| US3514534A | Wide-aperture laser beam modulating and scanning system | Expired / Lapsed | 1966-12-09 | 1970-05-26 | 0 | Details |
| US3506835A | Photo-detector signal-translating device | Expired / Lapsed | 1967-08-01 | 1970-04-14 | 0 | Details |
| US3506334A | Phased array-type beam scanning | Expired / Lapsed | 1966-02-17 | 1970-04-14 | 0 | Details |
| US3498693A | Radiation translating devices | Expired / Lapsed | 1967-01-24 | 1970-03-03 | 0 | Details |
| US3488437A | Video display systems | Expired / Lapsed | 1966-12-09 | 1970-01-06 | 0 | Details |
| US3466399A | Stereo receiver suitable for integrated circuit construction | Expired / Lapsed | 1966-12-06 | 1969-09-09 | 0 | Details |
| US3446975A | Acousto-electric filter utilizing surface wave propagation … | Expired / Lapsed | 1966-11-07 | 1969-05-27 | 0 | Details |
| US3442269A | Defibrillator and control circuit | Expired / Lapsed | 1965-12-20 | 1969-05-06 | 0 | Details |
| US3431504A | Acoustical light signal-translating apparatus | Expired / Lapsed | 1964-08-10 | 1969-03-04 | 0 | Details |
| US3396232A | Interrogating system for subscription television receivers | Expired / Lapsed | 1964-07-01 | 1968-08-06 | 0 | Details |
| US3389703A | Defibrillator electrode or the like | Expired / Lapsed | 1966-02-03 | 1968-06-25 | 2 | Details |
| US3389704A | Discharge circuit for a defibrillator | Expired / Lapsed | 1965-12-06 | 1968-06-25 | 2 | Details |
| US3319179A | Automatic frequency controlled signal generator | Expired / Lapsed | 1966-03-11 | 1967-05-09 | 2 | Details |
| US3286035A | Multivibrator detector for stereophonic frequency modulatio… | Expired / Lapsed | 1964-09-24 | 1966-11-15 | 2 | Details |
| US3258013A | Defibrillators | Expired / Lapsed | 1963-07-01 | 1966-06-28 | 2 | Details |
| US3227931A | Permanent-magnet uniform-field-producing apparatus | Expired / Lapsed | 1963-07-18 | 1966-01-04 | 2 | Details |
| US3133993A | Stereo fm transmission system | Expired / Lapsed | 1960-04-18 | 1964-05-19 | 2 | Details |
| US3112486A | Remote control system | Expired / Lapsed | 1958-04-07 | 1963-11-26 | 2 | Details |
| US3059138A | Modulation expander and coupler for parametric amplifiers | Expired / Lapsed | 1959-09-11 | 1962-10-16 | 0 | Details |
| US3019352A | Tetrode transistor circuit | Expired / Lapsed | 1958-12-16 | 1962-01-30 | 0 | Details |
| US2997603A | Transistor control system | Expired / Lapsed | 1958-10-28 | 1961-08-22 | 0 | Details |
| US2992412A | Remote control system | Expired / Lapsed | 1959-04-23 | 1961-07-11 | 0 | Details |
| US2976533A | Radio astronomy antenna having spherical reflector formed i… | Expired / Lapsed | 1954-11-12 | 1961-03-21 | 0 | Details |
| US2959740A | Parametric amplifier modulation expander | Expired / Lapsed | 1959-05-01 | 1960-11-08 | 0 | Details |
| US2954545A | Remote control system | Expired / Lapsed | 1958-04-10 | 1960-09-27 | 0 | Details |
| US2939916A | Wave-signal translating circuits | Expired / Lapsed | 1956-02-07 | 1960-06-07 | 0 | Details |
| US2939040A | Scanning generator | Expired / Lapsed | 1957-08-30 | 1960-05-31 | 0 | Details |
| US2896193A | Magnetic memory storage apparatus | Expired / Lapsed | 1954-10-21 | 1959-07-21 | 0 | Details |
| US2874977A | Code card device | Expired / Lapsed | 1957-02-14 | 1959-02-24 | 0 | Details |
| US2866962A | Subscription television code determining arrangement | Expired / Lapsed | 1955-12-06 | 1958-12-30 | 0 | Details |
| US2861206A | Color image reproducers | Expired / Lapsed | 1955-12-29 | 1958-11-18 | 2 | Details |
| US2852598A | Subscription television system | Expired / Lapsed | 1953-07-08 | 1958-09-16 | 0 | Details |
| US2817025A | Control system | Expired / Lapsed | 1957-08-05 | 1957-12-17 | 0 | Details |
| US2816156A | Subscription television system | Expired / Lapsed | 1951-06-08 | 1957-12-10 | 0 | Details |
| US2802100A | Transistor receiver with constant impedance manual-gain con… | Expired / Lapsed | 1955-08-15 | 1957-08-06 | 0 | Details |
| US2794851A | Code storage device | Expired / Lapsed | 1952-02-08 | 1957-06-04 | 0 | Details |
| US2781492A | Controllable reactive current systems | Expired / Lapsed | 1955-08-29 | 1957-02-12 | 0 | Details |
| US2779818A | Demodulating systems for color television | Expired / Lapsed | 1955-05-02 | 1957-01-29 | 0 | Details |
| US2755333A | Subscription television system | Expired / Lapsed | 1950-03-28 | 1956-07-17 | 0 | Details |
| US2708088A | Chassis mounting bracket | Expired / Lapsed | 1952-09-15 | 1955-05-10 | 0 | Details |
| US2702874A | Deflection system | Expired / Lapsed | 1950-12-13 | 1955-02-22 | 0 | Details |
| US2684440A | Pulse-controlled bistable multivibrator | Expired / Lapsed | 1950-11-24 | 1954-07-20 | 0 | Details |
| US2664460A | Subscription type television system | Expired / Lapsed | 1950-04-26 | 1953-12-29 | 0 | Details |
| US2656407A | Subscriber signaling system | Expired / Lapsed | 1949-02-12 | 1953-10-20 | 0 | Details |
| US2656406A | Subscriber television system | Expired / Lapsed | 1948-07-02 | 1953-10-20 | 0 | Details |
| US2656405A | Air key subscriber television system | Expired / Lapsed | 1948-06-28 | 1953-10-20 | 0 | Details |
| US2640919A | Wave signal frequency-changing system with constant current… | Expired / Lapsed | 1950-12-12 | 1953-06-02 | 0 | Details |
| US2640889A | Piezoelectric transducer | Expired / Lapsed | 1949-05-17 | 1953-06-02 | 0 | Details |
| US2632799A | Decoding apparatus for television receivers | Expired / Lapsed | 1949-03-03 | 1953-03-24 | 0 | Details |
| US2619530A | Control system for subscription type television receivers | Expired / Lapsed | 1949-11-19 | 1952-11-25 | 0 | Details |
| US2619437A | Primary cells | Expired / Lapsed | 1948-05-21 | 1952-11-25 | 0 | Details |
| US2615972A | Credit verification for subscription type television systems | Expired / Lapsed | 1949-04-22 | 1952-10-28 | 0 | Details |
| US2612552A | Subscription type signaling system | Expired / Lapsed | 1949-06-10 | 1952-09-30 | 0 | Details |
| US2596117A | Frequency converter system | Expired / Lapsed | 1948-11-06 | 1952-05-13 | 0 | Details |
| US2591914A | Self-sustaining sawtooth current generator | Expired / Lapsed | 1949-11-26 | 1952-04-08 | 0 | Details |
| US2588413A | Random frequency divider | Expired / Lapsed | 1948-06-11 | 1952-03-11 | 0 | Details |
| US2573349A | Subscriber signaling system | Expired / Lapsed | 1949-12-09 | 1951-10-30 | 0 | Details |
| US2570187A | Subscriber signaling system | Expired / Lapsed | 1948-07-21 | 1951-10-09 | 0 | Details |
| US2567545A | Subscription-type television receiver | Expired / Lapsed | 1948-09-30 | 1951-09-11 | 0 | Details |
| US2561768A | Thermionic cathode activation | Expired / Lapsed | 1950-04-10 | 1951-07-24 | 0 | Details |
| US2553734A | Power line signal pickup | Expired / Lapsed | 1945-12-21 | 1951-05-22 | 0 | Details |
| US2547598A | Subscription image transmission system and apparatus | Expired / Lapsed | 1947-09-13 | 1951-04-03 | 0 | Details |
| US2540194A | Piezoelectric transducer and method for producing same | Expired / Lapsed | 1950-05-02 | 1951-02-06 | 0 | Details |
| US2540187A | Piezoelectric transducer and method for producing same | Expired / Lapsed | 1950-05-02 | 1951-02-06 | 0 | Details |
| US2540412A | Piezoelectric transducer and method for producing same | Expired / Lapsed | 1947-12-26 | 1951-02-06 | 0 | Details |
| US2538554A | Process of producing piezoelectric transducers | Expired / Lapsed | 1947-08-22 | 1951-01-16 | 2 | Details |
| US2531974A | Subscription type television transmitter | Expired / Lapsed | 1949-04-07 | 1950-11-28 | 0 | Details |
| US2527646A | Record changer trip mechanism | Expired / Lapsed | 1945-04-23 | 1950-10-31 | 0 | Details |
| US2505551A | Hearing and casing and guard | Expired / Lapsed | 1945-04-19 | 1950-04-25 | 0 | Details |
| US2497484A | Electrical terminal | Expired / Lapsed | 1947-02-19 | 1950-02-14 | 0 | Details |
| US2465416A | Resonant circuit and radiator | Expired / Lapsed | 1943-10-02 | 1949-03-29 | 0 | Details |
| US2459325A | Bone conduction unit | Expired / Lapsed | 1944-10-27 | 1949-01-18 | 0 | Details |
| US2457479A | Sunshade mounting | Expired / Lapsed | 1944-02-21 | 1948-12-28 | 0 | Details |
| US2455450A | Radio receiver noise suppression circuit | Expired / Lapsed | 1944-01-13 | 1948-12-07 | 0 | Details |
| US2449646A | Vacuum tube lock | Expired / Lapsed | 1945-11-23 | 1948-09-21 | 0 | Details |
| US2447572A | Radio cabinet | Expired / Lapsed | 1945-10-08 | 1948-08-24 | 0 | Details |
| US2447576A | Portable radio receiver | Expired / Lapsed | 1944-03-11 | 1948-08-24 | 0 | Details |
| US2444218A | Frequency-modulated radio-phonograph combination | Expired / Lapsed | 1941-08-11 | 1948-06-29 | 0 | Details |
| US2433805A | Control means for sequentially and selectively adjusting va… | Expired / Lapsed | 1943-09-27 | 1947-12-30 | 0 | Details |
| US2406583A | Portable apparatus | Expired / Lapsed | 1943-04-12 | 1946-08-27 | 0 | Details |
| US2383463A | Spread band tuning device | Expired / Lapsed | 1942-10-28 | 1945-08-28 | 0 | Details |
| US2383462A | Spread band tuning device | Expired / Lapsed | 1942-09-19 | 1945-08-28 | 0 | Details |
| US2323880A | Wave amplitude limiting device | Expired / Lapsed | 1940-12-26 | 1943-07-06 | 0 | Details |
| US2310720A | Antenna coupling and tuning system for communication or bro… | Expired / Lapsed | 1941-04-21 | 1943-02-09 | 0 | Details |
| US2295191A | Radio receiving apparatus | Expired / Lapsed | 1940-09-19 | 1942-09-08 | 0 | Details |
| US2229729A | Power supply system | Expired / Lapsed | 1940-02-12 | 1941-01-28 | 0 | Details |