Ampex Corp
Ampex CorpActive Patents
0
Total Holdings
106
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5214718A | Scan-in polygonal extraction of video images | Expired / Lapsed | 1992-10-19 | 1993-05-25 | 18 | Details |
| US5189355A | Interactive rotary controller system with tactile feedback | Expired / Lapsed | 1992-04-10 | 1993-02-23 | 10 | Details |
| US5047883A | Pantograph head mount having double leaves integral with a … | Expired / Lapsed | 1990-02-07 | 1991-09-10 | 20 | Details |
| US4970581A | Circuit for and method of detecting color field sequence in… | Expired / Lapsed | 1988-09-09 | 1990-11-13 | 24 | Details |
| US4923053A | Flexible member mounting assembly | Expired / Lapsed | 1987-04-10 | 1990-05-08 | 34 | Details |
| US4820109A | Bidirectional transfer mechanism | Expired / Lapsed | 1986-04-11 | 1989-04-11 | 41 | Details |
| US4759014A | Asynchronous-to-synchronous digital data multiplexer/demult… | Expired / Lapsed | 1987-05-28 | 1988-07-19 | 24 | Details |
| US4568981A | Font recall system and method of operation | Expired / Lapsed | 1983-04-08 | 1986-02-04 | 17 | Details |
| US4560983A | Dynamically interactive responsive control device and system | Expired / Lapsed | 1982-09-17 | 1985-12-24 | 80 | Details |
| US4463372A | Spatial transformation system including key signal generator | Expired / Lapsed | 1982-03-24 | 1984-07-31 | 17 | Details |
| US4354243A | Two dimensional interpolation circuit for spatial and shadi… | Expired / Lapsed | 1980-04-11 | 1982-10-12 | 27 | Details |
| US4270150A | Video frame storage recording and reproducing apparatus | Expired / Lapsed | 1977-01-28 | 1981-05-26 | 29 | Details |
| US4232257A | Web transport capstan control system | Expired / Lapsed | 1976-05-03 | 1980-11-04 | 67 | Details |
| US4211997A | Method and apparatus employing an improved format for recor… | Expired / Lapsed | 1978-11-03 | 1980-07-08 | 26 | Details |
| FR2344921B1 | FR2344921B1 - - Google Patents | Expired / Lapsed | 1977-03-17 | 1980-05-09 | 0 | Details |
| US4151570A | Automatic scan tracking using a magnetic head supported by … | Expired / Lapsed | 1976-03-22 | 1979-04-24 | 32 | Details |
| US4122477A | Method and apparatus for inserting synchronizing words in a… | Expired / Lapsed | 1977-01-28 | 1978-10-24 | 42 | Details |
| US4099211A | Positionable transducing mounting structure and driving sys… | Expired / Lapsed | 1976-09-13 | 1978-07-04 | 42 | Details |
| US4093885A | Transducer assembly vibration sensor | Expired / Lapsed | 1976-04-16 | 1978-06-06 | 7 | Details |
| US4062048A | Tape timing apparatus and method employing a phase comparis… | Expired / Lapsed | 1976-03-19 | 1977-12-06 | 12 | Details |
| US3924167A | Three Phase brushless DC motor | Expired / Lapsed | 1973-09-17 | 1975-12-02 | 7 | Details |
| US3834648A | Apparatus and method for sensing diameter of tape pack on s… | Expired / Lapsed | 1972-03-15 | 1974-09-10 | 7 | Details |
| US3743378A | Optical intensity matching means for two light beams | Expired / Lapsed | 1971-07-30 | 1973-07-03 | 8 | Details |
| US3744030A | Intrinsic controls for information retrieval systems employ… | Expired / Lapsed | 1971-04-28 | 1973-07-03 | 6 | Details |
| US3697149A | Fourier transform holographic storage and retrieval system | Expired / Lapsed | 1969-12-10 | 1972-10-10 | 17 | Details |
| US3686469A | Steady state phase error correction circuit | Expired / Lapsed | 1970-04-02 | 1972-08-22 | 11 | Details |
| US3663764A | Automatic tracking circuit for transverse scan magnetic tap… | Expired / Lapsed | 1970-04-06 | 1972-05-16 | 2 | Details |
| US3663877A | Brushless dc motor including tachometer commutation circuit | Expired / Lapsed | 1970-04-02 | 1972-05-16 | 8 | Details |
| US3614333A | Head mount for a magnetic disc recorder | Expired / Lapsed | 1968-03-18 | 1971-10-19 | 8 | Details |
| US3578262A | Cassette changer with fast tape wind | Expired / Lapsed | 1969-11-10 | 1971-05-11 | 8 | Details |
| US3576496A | Digital controlled time multiplier | Expired / Lapsed | 1969-11-17 | 1971-04-27 | 11 | Details |
| US3536856A | Record-reproduce mode selection without mechanical relays | Expired / Lapsed | 1967-09-20 | 1970-10-27 | 0 | Details |
| US3532974A | Time error compensator | Expired / Lapsed | 1968-03-29 | 1970-10-06 | 0 | Details |
| US3526726A | Piezoelectric transducer assembly for positioning a magneti… | Expired / Lapsed | 1967-09-27 | 1970-09-01 | 0 | Details |
| US3493694A | Magnetoresistive head | Expired / Lapsed | 1966-01-19 | 1970-02-03 | 0 | Details |
| US3487392A | Incremental web member drive system | Expired / Lapsed | 1967-06-12 | 1969-12-30 | 0 | Details |
| US3484548A | Control apparatus for program distribution of broadcast and… | Expired / Lapsed | 1966-09-16 | 1969-12-16 | 2 | Details |
| US3473960A | Surface finishing of magnetic tape by solvent exchange | Expired / Lapsed | 1966-12-12 | 1969-10-21 | 0 | Details |
| US3463877A | Electronic editing system for video tape recordings | Expired / Lapsed | 1965-08-02 | 1969-08-26 | 0 | Details |
| US3437795A | Data input devices and systems | Expired / Lapsed | 1965-06-28 | 1969-04-08 | 0 | Details |
| US3437510A | Magnetic tape binder | Expired / Lapsed | 1963-11-07 | 1969-04-08 | 2 | Details |
| US3399334A | Servo controlled motor drive with a mechanical filter betwe… | Expired / Lapsed | 1967-03-27 | 1968-08-27 | 0 | Details |
| US3387993A | Magnetic tape with a lubricant containing mineral oil and f… | Expired / Lapsed | 1964-10-16 | 1968-06-11 | 0 | Details |
| US3383578A | Continuous mode motor speed control system | Expired / Lapsed | 1964-10-26 | 1968-05-14 | 0 | Details |
| US3381083A | Magnetic recorder equalization system having continually ad… | Expired / Lapsed | 1965-03-12 | 1968-04-30 | 2 | Details |
| US3379556A | Electroless plating system | Expired / Lapsed | 1965-02-24 | 1968-04-23 | 2 | Details |
| US3365709A | High permeability magnetic head assembly | Expired / Lapsed | 1963-12-16 | 1968-01-23 | 0 | Details |
| US3359548A | Magnetic recording and verifying system | Expired / Lapsed | 1964-03-27 | 1967-12-19 | 2 | Details |
| US3345547A | Step motor control system including a three stage energizat… | Expired / Lapsed | 1965-01-21 | 1967-10-03 | 1 | Details |
| US3342932A | Digital control system for animation effects with a televis… | Expired / Lapsed | 1963-12-09 | 1967-09-19 | 1 | Details |
| US3320090A | Phenoxy-polyurethane magnetic tape binder | Expired / Lapsed | 1964-07-30 | 1967-05-16 | 2 | Details |
| US3319901A | Loop control system for tape transports | Expired / Lapsed | 1963-04-17 | 1967-05-16 | 2 | Details |
| US3320598A | Self-clocking complementary redundant recording system | Expired / Lapsed | 1962-10-04 | 1967-05-16 | 2 | Details |
| US3319176A | High linearity limiter circuit using non-selected components | Expired / Lapsed | 1964-07-17 | 1967-05-09 | 2 | Details |
| US3317818A | Regulated power supply | Expired / Lapsed | 1963-06-03 | 1967-05-02 | 2 | Details |
| US3302900A | Tape transport vacuum chamber | Expired / Lapsed | 1963-09-24 | 1967-02-07 | 2 | Details |
| US3303485A | Magnetic disc with air bearing which spirals radially outwa… | Expired / Lapsed | 1963-03-18 | 1967-02-07 | 2 | Details |
| US3303292A | Magnetic head assembly | Expired / Lapsed | 1963-02-25 | 1967-02-07 | 2 | Details |
| US3294902A | Fast, slow and stop motion reproduction using longitudinal … | Expired / Lapsed | 1963-12-30 | 1966-12-27 | 1 | Details |
| US3293522A | Motor drive circuits | Expired / Lapsed | 1963-03-22 | 1966-12-20 | 1 | Details |
| US3278680A | Camera system for recording aircraft landings | Expired / Lapsed | 1963-06-05 | 1966-10-11 | 2 | Details |
| US3267387A | Temperature and frequency stable amplifier | Expired / Lapsed | 1964-02-06 | 1966-08-16 | 2 | Details |
| US3265810A | Signal separation means | Expired / Lapsed | 1963-04-04 | 1966-08-09 | 2 | Details |
| US3243789A | Verification and correction of magnetic recording during a … | Expired / Lapsed | 1962-06-29 | 1966-03-29 | 2 | Details |
| FR1452084A | Calculator | Expired / Lapsed | 1965-06-18 | 1966-02-25 | 0 | Details |
| US3236777A | Nickel-manganese-ferrous ferrite | Expired / Lapsed | 1963-04-12 | 1966-02-22 | 2 | Details |
| US3230307A | Interlock system for wideband magnetic recording and reprod… | Expired / Lapsed | 1962-09-04 | 1966-01-18 | 1 | Details |
| US3229035A | Selective recording and display systems for television reco… | Expired / Lapsed | 1962-09-11 | 1966-01-11 | 4 | Details |
| US3229273A | Magnetic reproduce system and method | Expired / Lapsed | 1961-04-03 | 1966-01-11 | 2 | Details |
| US3223929A | Binary frequency modulation demodulator | Expired / Lapsed | 1963-10-03 | 1965-12-14 | 2 | Details |
| US3204047A | Signal reproducing system with phase cancellation of undesi… | Expired / Lapsed | 1962-03-19 | 1965-08-31 | 2 | Details |
| US3200340A | Synchronization monitor | Expired / Lapsed | 1962-11-29 | 1965-08-10 | 2 | Details |
| US3200007A | Method for making a magnetic recording medium | Expired / Lapsed | 1962-10-24 | 1965-08-10 | 0 | Details |
| US3199093A | Erasure prevention control for magnetic tape recorder | Expired / Lapsed | 1962-06-29 | 1965-08-03 | 2 | Details |
| US3190748A | Preparation of oxalate magnetic particles | Expired / Lapsed | 1963-02-28 | 1965-06-22 | 2 | Details |
| US3187199A | Peak detecting and reshaping circuit | Expired / Lapsed | 1962-01-31 | 1965-06-01 | 1 | Details |
| US3179752A | Capstan servo system | Expired / Lapsed | 1960-08-22 | 1965-04-20 | 1 | Details |
| US3171754A | Magnetic storage medium for magneto-optical readout | Expired / Lapsed | 1961-01-30 | 1965-03-02 | 2 | Details |
| FR1384411A | Improvements to magnetic recording media | Expired / Lapsed | 1964-02-25 | 1965-01-04 | 0 | Details |
| US3146432A | Velocity or frequency sensing means | Expired / Lapsed | 1960-10-03 | 1964-08-25 | 2 | Details |
| US3144353A | Polyolefin coated with thermoset coating used in magnetic r… | Expired / Lapsed | 1963-03-08 | 1964-08-11 | 3 | Details |
| US3144352A | Magnetic tape having a binder mixture of polyurethane resin… | Expired / Lapsed | 1962-10-15 | 1964-08-11 | 2 | Details |
| US3139610A | Magnetic-core memory construction | Expired / Lapsed | 1961-11-06 | 1964-06-30 | 2 | Details |
| US3136867A | Electrostatic transducer | Expired / Lapsed | 1961-09-25 | 1964-06-09 | 2 | Details |
| US3131384A | Recording and reproducing system | Expired / Lapsed | 1960-08-29 | 1964-04-28 | 1 | Details |
| US3129391A | Wide deviation frequency modulation signal generator | Expired / Lapsed | 1960-01-28 | 1964-04-14 | 2 | Details |
| US3097267A | Tape recording and/or reproducing system and method | Expired / Lapsed | 1958-08-08 | 1963-07-09 | 2 | Details |
| US3095473A | Editing system for electronic recordings | Expired / Lapsed | 1960-05-16 | 1963-06-25 | 2 | Details |
| US3095472A | Video recording system and method | Expired / Lapsed | 1958-06-02 | 1963-06-25 | 2 | Details |
| US3090905A | Power supply overload protector | Expired / Lapsed | 1959-08-13 | 1963-05-21 | 2 | Details |
| US3083303A | Diode input nor circuit including positive feedback | Expired / Lapsed | 1959-06-18 | 1963-03-26 | 1 | Details |
| US3070670A | Magnetic record head assembly | Expired / Lapsed | 1960-02-23 | 1962-12-25 | 0 | Details |
| US3045937A | Web tension control | Expired / Lapsed | 1960-12-06 | 1962-07-24 | 0 | Details |
| US3034107A | Memory sensing circuit | Expired / Lapsed | 1960-12-27 | 1962-05-08 | 0 | Details |
| US3032285A | Magnetic tape apparatus and cycling control therefor | Expired / Lapsed | 1959-08-17 | 1962-05-01 | 0 | Details |
| US3023692A | Cable harness strip | Expired / Lapsed | 1959-04-13 | 1962-03-06 | 0 | Details |
| US3022461A | Frequency and/or phase demodulator | Expired / Lapsed | 1959-07-20 | 1962-02-20 | 0 | Details |
| US3005582A | Tape recording and reproducing apparatus and drive system t… | Expired / Lapsed | 1959-08-13 | 1961-10-24 | 0 | Details |
| US2998495A | Recording and reproducing high frequencies transversely on … | Expired / Lapsed | 1958-03-26 | 1961-08-29 | 0 | Details |
| US2996576A | Video system with transient and dropout compensation | Expired / Lapsed | 1959-02-20 | 1961-08-15 | 0 | Details |
| US2989265A | Tape guiding system | Expired / Lapsed | 1960-05-31 | 1961-06-20 | 0 | Details |
| US2960563A | Magnetic tape system and method for recording and reproduci… | Expired / Lapsed | 1955-12-13 | 1960-11-15 | 0 | Details |
| US2911162A | Magnetic tape apparatus | Expired / Lapsed | 1954-11-08 | 1959-11-03 | 0 | Details |
| US2900451A | Magnetic transducing apparatus | Expired / Lapsed | 1955-08-24 | 1959-08-18 | 0 | Details |
| US2866012A | Magnetic tape recording and reproducing system | Expired / Lapsed | 1955-05-06 | 1958-12-23 | 0 | Details |
| US2802201A | Recording apparatus and system | Expired / Lapsed | 1954-09-20 | 1957-08-06 | 0 | Details |