Hazeltine Research Inc
HazeltineActive Patents
0
Total Holdings
128
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3838444A | System for transmitting auxiliary information in low energy… | Expired / Lapsed | 1972-10-30 | 1974-09-24 | 0 | Details |
| US3600062A | Wide angle narrow band optical filter | Expired / Lapsed | 1967-02-14 | 1971-08-17 | 10 | Details |
| US3542536A | Method of forming optical waveguide by irradiation of diele… | Expired / Lapsed | 1967-09-01 | 1970-11-24 | 0 | Details |
| US3427617A | Signal transmitting and receiving system | Expired / Lapsed | 1959-04-21 | 1969-02-11 | 1 | Details |
| US3423673A | Apparatus utilizing magnetostrictive member for measuring l… | Expired / Lapsed | 1965-07-13 | 1969-01-21 | 0 | Details |
| US3392395A | Monopulse antenna system providing independent control in a… | Expired / Lapsed | 1966-04-26 | 1968-07-09 | 2 | Details |
| US3387083A | Pay television system with billing transponder | Expired / Lapsed | 1963-12-23 | 1968-06-04 | 0 | Details |
| US3386787A | Macroscopic optical waveguides | Expired / Lapsed | 1963-10-25 | 1968-06-04 | 2 | Details |
| US3351929A | Data converter | Expired / Lapsed | 1964-05-26 | 1967-11-07 | 4 | Details |
| US3340355A | Matrixing apparatus for a color television system | Expired / Lapsed | 1963-06-05 | 1967-09-05 | 3 | Details |
| US3333091A | Correlation function generator with means for generating a … | Expired / Lapsed | 1963-11-22 | 1967-07-25 | 2 | Details |
| US3311870A | Solid state proportional commutator | Expired / Lapsed | 1964-12-30 | 1967-03-28 | 2 | Details |
| US3310808A | Electromagnetic wave transmissive metal walls utilizing pro… | Expired / Lapsed | 1963-12-30 | 1967-03-21 | 2 | Details |
| US3309692A | Character display apparatus | Expired / Lapsed | 1964-12-03 | 1967-03-14 | 2 | Details |
| US3293614A | Data converter system | Expired / Lapsed | 1963-04-29 | 1966-12-20 | 2 | Details |
| US3281850A | Double-feed antennas operating with waves of two frequencie… | Expired / Lapsed | 1962-03-07 | 1966-10-25 | 2 | Details |
| US3271771A | Double-reflector, double-feed antenna for crossed polarizat… | Expired / Lapsed | 1962-02-15 | 1966-09-06 | 2 | Details |
| US3254345A | Artificial dielectric using interspersed rods | Expired / Lapsed | 1963-07-05 | 1966-05-31 | 2 | Details |
| US3222666A | Stroboscopic readout of display tape | Expired / Lapsed | 1961-04-06 | 1965-12-07 | 2 | Details |
| US3201705A | Integrator for periodically recurring signals | Expired / Lapsed | 1961-04-28 | 1965-08-17 | 2 | Details |
| US3167611A | Color-television apparatus for improving resolution during … | Expired / Lapsed | 1960-03-25 | 1965-01-26 | 2 | Details |
| US3147469A | Numeral display having plural electrode control of characte… | Expired / Lapsed | 1961-12-06 | 1964-09-01 | 2 | Details |
| US3139566A | Construction of magnetic deflection yokes and the like | Expired / Lapsed | 1960-07-25 | 1964-06-30 | 2 | Details |
| US3128333A | Electronic previewer for color printing processes | Expired / Lapsed | 1960-01-12 | 1964-04-07 | 2 | Details |
| US3109103A | Nonlinear signal-translating circuit | Expired / Lapsed | 1959-04-01 | 1963-10-29 | 2 | Details |
| US3102213A | Multiplanar printed circuits and methods for their manufact… | Expired / Lapsed | 1960-05-13 | 1963-08-27 | 2 | Details |
| US3047872A | Styli unit | Expired / Lapsed | 1959-12-22 | 1962-07-31 | 0 | Details |
| US3046537A | Indicator for ice and like substances | Expired / Lapsed | 1959-09-18 | 1962-07-24 | 0 | Details |
| US3015689A | Color-television camera | Expired / Lapsed | 1959-08-13 | 1962-01-02 | 0 | Details |
| US3015763A | Signal-translating device | Expired / Lapsed | 1956-03-08 | 1962-01-02 | 0 | Details |
| US2996707A | Radar control system | Expired / Lapsed | 1954-07-26 | 1961-08-15 | 0 | Details |
| US2995620A | Color television-signal convepsion apparatus | Expired / Lapsed | 1955-06-27 | 1961-08-08 | 0 | Details |
| US2974183A | Gasket for electric equipment | Expired / Lapsed | 1959-04-08 | 1961-03-07 | 0 | Details |
| US2950463A | Pulse-translating system | Expired / Lapsed | 1954-06-08 | 1960-08-23 | 0 | Details |
| US2948886A | Code-setting device | Expired / Lapsed | 1955-01-28 | 1960-08-09 | 0 | Details |
| US2936384A | Six junction transistor signaltranslating system | Expired / Lapsed | 1957-04-12 | 1960-05-10 | 0 | Details |
| US2929025A | Transistor signal-translating system | Expired / Lapsed | 1957-01-22 | 1960-03-15 | 0 | Details |
| US2928186A | Travel instruction apparatus | Expired / Lapsed | 1956-09-27 | 1960-03-15 | 0 | Details |
| US2924651A | Signal-translating apparatus for a color-television receiver | Expired / Lapsed | 1956-10-19 | 1960-02-09 | 0 | Details |
| US2888648A | Transistor reactance device | Expired / Lapsed | 1954-03-31 | 1959-05-26 | 0 | Details |
| US2881410A | Identity-indicating system for radio position locator | Expired / Lapsed | 1954-07-30 | 1959-04-07 | 0 | Details |
| US2877293A | Color-balance control system | Expired / Lapsed | 1954-06-17 | 1959-03-10 | 0 | Details |
| US2857593A | Radar testing apparatus | Expired / Lapsed | 1955-08-12 | 1958-10-21 | 0 | Details |
| US2853602A | Frequency-converter system having mixer and local oscillato… | Expired / Lapsed | 1956-09-27 | 1958-09-23 | 0 | Details |
| US2848628A | Transistor ring counter | Expired / Lapsed | 1954-10-06 | 1958-08-19 | 0 | Details |
| US2844795A | Transistor reactance device | Expired / Lapsed | 1954-03-31 | 1958-07-22 | 0 | Details |
| US2837638A | Pulse generator | Expired / Lapsed | 1953-06-03 | 1958-06-03 | 0 | Details |
| US2832073A | Control system | Expired / Lapsed | 1954-11-10 | 1958-04-22 | 0 | Details |
| US2795656A | Repeater system | Expired / Lapsed | 1955-09-01 | 1957-06-11 | 0 | Details |
| US2790903A | Signal-translating circuit | Expired / Lapsed | 1953-02-18 | 1957-04-30 | 0 | Details |
| US2773929A | Constant luminance color-television system | Expired / Lapsed | 1950-05-01 | 1956-12-11 | 0 | Details |
| US2757571A | Photographic color printer | Expired / Lapsed | 1953-09-15 | 1956-08-07 | 0 | Details |
| US2736849A | Junction-type transistors | Expired / Lapsed | 1952-12-23 | 1956-02-28 | 2 | Details |
| US2711529A | System for developing a signal representative of velocity | Expired / Lapsed | 1951-12-26 | 1955-06-21 | 0 | Details |
| US2703389A | Time-delay network | Expired / Lapsed | 1953-11-17 | 1955-03-01 | 0 | Details |
| US2691073A | Transistor system for translating signals in two directions | Expired / Lapsed | 1952-07-18 | 1954-10-05 | 0 | Details |
| US2671608A | Electrical computer | Expired / Lapsed | 1949-10-05 | 1954-03-09 | 0 | Details |
| US2671156A | Method of producing electrical crystal-contact devices | Expired / Lapsed | 1951-10-10 | 1954-03-02 | 2 | Details |
| US2660696A | Crystal contact device | Expired / Lapsed | 1950-05-10 | 1953-11-24 | 0 | Details |
| US2652194A | Electrical computer | Expired / Lapsed | 1948-03-02 | 1953-09-15 | 0 | Details |
| US2640925A | Electron discharge signal-sampling device | Expired / Lapsed | 1952-04-09 | 1953-06-02 | 0 | Details |
| US2597734A | Electrical crystal contact device | Expired / Lapsed | 1950-05-10 | 1952-05-20 | 0 | Details |
| US2588008A | Germanium crystal rectifiers and method of producing the cr… | Expired / Lapsed | 1947-07-29 | 1952-03-04 | 2 | Details |
| US2588021A | Superregenerative receiver | Expired / Lapsed | 1946-09-28 | 1952-03-04 | 0 | Details |
| US2584461A | Electrical crystal-contact device | Expired / Lapsed | 1950-05-10 | 1952-02-05 | 0 | Details |
| US2583681A | Crystal contacts of which one element is silicon | Expired / Lapsed | 1947-08-06 | 1952-01-29 | 2 | Details |
| US2575571A | Wave-signal directional coupler | Expired / Lapsed | 1947-05-13 | 1951-11-20 | 0 | Details |
| US2572725A | Path-indicating system for mobile craft | Expired / Lapsed | 1946-02-15 | 1951-10-23 | 0 | Details |
| US2554893A | Traffic signaling system | Expired / Lapsed | 1946-07-31 | 1951-05-29 | 0 | Details |
| US2552414A | Electrical connector for solid dielectric type coaxial lines | Expired / Lapsed | 1948-06-08 | 1951-05-08 | 0 | Details |
| US2548436A | Television receiver background control circuit | Expired / Lapsed | 1946-01-25 | 1951-04-10 | 0 | Details |
| US2540012A | Electrical connector | Expired / Lapsed | 1945-05-19 | 1951-01-30 | 0 | Details |
| US2532736A | Arrangement for comparing electrical characteristics | Expired / Lapsed | 1946-08-21 | 1950-12-05 | 0 | Details |
| US2527664A | Wave-signal translating system for selected band of wave-si… | Expired / Lapsed | 1945-11-08 | 1950-10-31 | 0 | Details |
| US2525919A | Centering arrangement for cathode-ray tubes | Expired / Lapsed | 1948-07-01 | 1950-10-17 | 0 | Details |
| US2522731A | Elongated coil time delay network | Expired / Lapsed | 1945-10-23 | 1950-09-19 | 0 | Details |
| US2511595A | High-frequency pulse generator | Expired / Lapsed | 1945-02-27 | 1950-06-13 | 0 | Details |
| US2508479A | High-frequency electromagneticwave translating arrangement | Expired / Lapsed | 1944-11-16 | 1950-05-23 | 0 | Details |
| US2504852A | Measuring system, including an electronically traced vernie… | Expired / Lapsed | 1947-02-21 | 1950-04-18 | 0 | Details |
| US2491029A | System for translating pulse signals of variable time delay | Expired / Lapsed | 1947-07-11 | 1949-12-13 | 0 | Details |
| US2490530A | Wave-signal analyzing system | Expired / Lapsed | 1946-12-17 | 1949-12-06 | 0 | Details |
| US2486285A | Electrical contact member | Expired / Lapsed | 1948-06-16 | 1949-10-25 | 0 | Details |
| US2484331A | Adjustable cam structure | Expired / Lapsed | 1945-12-06 | 1949-10-11 | 0 | Details |
| US2483097A | Position indicator for airborne traffic | Expired / Lapsed | 1946-09-12 | 1949-09-27 | 0 | Details |
| US2478409A | Time-sharing transpondor system | Expired / Lapsed | 1946-11-26 | 1949-08-09 | 0 | Details |
| US2469168A | Loop-antenna tuning system | Expired / Lapsed | 1946-12-17 | 1949-05-03 | 0 | Details |
| US2468256A | Television receiver including a horizontal oscillator respo… | Expired / Lapsed | 1945-06-22 | 1949-04-26 | 0 | Details |
| US2461646A | Carrier-wave communication system | Expired / Lapsed | 1941-10-08 | 1949-02-15 | 0 | Details |
| US2460202A | Radio receiver gain-control arrangement | Expired / Lapsed | 1944-04-19 | 1949-01-25 | 0 | Details |
| US2456803A | High-frequency energy leakage suppressor | Expired / Lapsed | 1946-03-15 | 1948-12-21 | 0 | Details |
| US2454396A | Wave-signal receiver-transmitter system | Expired / Lapsed | 1944-03-07 | 1948-11-23 | 0 | Details |
| US2454042A | Standing-wave measuring apparatus | Expired / Lapsed | 1945-01-18 | 1948-11-16 | 0 | Details |
| US2447375A | Wave-signal translating system | Expired / Lapsed | 1945-08-03 | 1948-08-17 | 0 | Details |
| US2444741A | Wave-signal translating system | Expired / Lapsed | 1943-12-31 | 1948-07-06 | 0 | Details |
| US2438795A | Wave-guide system | Expired / Lapsed | 1943-12-13 | 1948-03-30 | 0 | Details |
| US2438197A | Phase-selective variable-frequency oscillatory system | Expired / Lapsed | 1942-12-31 | 1948-03-23 | 0 | Details |
| US2434334A | High-frequency pulse measuring system | Expired / Lapsed | 1946-07-05 | 1948-01-13 | 0 | Details |
| US2432275A | Coupling device | Expired / Lapsed | 1943-02-01 | 1947-12-09 | 0 | Details |
| US2432057A | Wave-signal antenna | Expired / Lapsed | 1944-06-23 | 1947-12-02 | 0 | Details |
| US2432026A | Position-indicating arrangement | Expired / Lapsed | 1943-09-20 | 1947-12-02 | 0 | Details |
| US2429513A | Gain-control arrangement | Expired / Lapsed | 1944-02-11 | 1947-10-21 | 0 | Details |
| US2428427A | Position-indicating device | Expired / Lapsed | 1944-09-15 | 1947-10-07 | 0 | Details |
| US2426429A | Electrical connector | Expired / Lapsed | 1945-01-06 | 1947-08-26 | 0 | Details |
| US2426460A | System for locating a radiatedsignal reflector | Expired / Lapsed | 1943-10-27 | 1947-08-26 | 0 | Details |
| US2426454A | Electronic switch | Expired / Lapsed | 1942-05-27 | 1947-08-26 | 0 | Details |
| US2421138A | Wave signal translating arrangement | Expired / Lapsed | 1945-06-01 | 1947-05-27 | 0 | Details |
| US2417895A | Balanced to unbalanced circuit connector | Expired / Lapsed | 1945-06-05 | 1947-03-25 | 0 | Details |
| US2416424A | Synchronizing-signal separator | Expired / Lapsed | 1939-03-16 | 1947-02-25 | 0 | Details |
| US2415667A | Receiver-transmitting arrangement | Expired / Lapsed | 1944-02-11 | 1947-02-11 | 0 | Details |
| US2415359A | Wave-signal translating system | Expired / Lapsed | 1944-10-10 | 1947-02-04 | 0 | Details |
| US2414992A | Superregenerative receiver | Expired / Lapsed | 1944-02-11 | 1947-01-28 | 0 | Details |
| US2413608A | Time-delay network | Expired / Lapsed | 1945-03-12 | 1946-12-31 | 0 | Details |
| US2413609A | Time-delay network | Expired / Lapsed | 1945-03-12 | 1946-12-31 | 0 | Details |
| US2413607A | Time-delay network | Expired / Lapsed | 1945-03-12 | 1946-12-31 | 0 | Details |
| US2413637A | Direction indicating device | Expired / Lapsed | 1944-09-15 | 1946-12-31 | 0 | Details |
| US2413440A | Electronic switch | Expired / Lapsed | 1942-05-15 | 1946-12-31 | 0 | Details |
| US2413423A | Color television signal-translating system | Expired / Lapsed | 1941-05-02 | 1946-12-31 | 0 | Details |
| US2409944A | System for space-scanning with a radiated beam of wave sign… | Expired / Lapsed | 1941-11-12 | 1946-10-22 | 0 | Details |
| US2407282A | System for indicating mechanical motion | Expired / Lapsed | 1941-12-18 | 1946-09-10 | 0 | Details |
| US2407281A | Radiated-signal direction finder | Expired / Lapsed | 1941-12-18 | 1946-09-10 | 0 | Details |
| US2406953A | System for determining the position of an object in space | Expired / Lapsed | 1941-08-21 | 1946-09-03 | 0 | Details |
| US2406468A | Direction-indicating system | Expired / Lapsed | 1944-09-15 | 1946-08-27 | 0 | Details |
| US2404640A | Ultra high frequency signaltranslating apparatus | Expired / Lapsed | 1941-10-29 | 1946-07-23 | 0 | Details |
| US2403889A | Telemetering system | Expired / Lapsed | 1943-08-24 | 1946-07-09 | 0 | Details |
| US2403890A | Telemetering system | Expired / Lapsed | 1943-08-24 | 1946-07-09 | 0 | Details |
| US2403729A | Coordinate determining system | Expired / Lapsed | 1942-07-02 | 1946-07-09 | 0 | Details |
| US2403728A | System for indicating the position in space of an object | Expired / Lapsed | 1941-11-28 | 1946-07-09 | 0 | Details |
| US2403252A | High-frequency impedance-matching device | Expired / Lapsed | 1944-11-16 | 1946-07-02 | 0 | Details |