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Siemens Schuckertwerke AG

Siemens Sc
Active Patents
1
Total Holdings
174

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
DE1068342B Electric control and regulation device Active / In Force — — 0 Details
GB953556A Improvements in or relating to the preparation of the surfa… Expired / Lapsed 1960-12-30 — 0 Details
GB924121A A monocrystalline semi-conductor device Expired / Lapsed 1960-11-14 — 0 Details
GB923292A Apparatus for detecting earth faults in electric current su… Expired / Lapsed 1960-11-14 — 0 Details
DE1048530B Process for the production of bodies from sintered hard mat… Expired / Lapsed 1957-10-02 — 0 Details
GB782774A Improvements in or relating to resistance devices for gener… Expired / Lapsed 1955-07-26 — 0 Details
GB492954A Improvements in or relating to shaft packings for the casin… Expired / Lapsed 1938-02-08 — 0 Details
GB499918A Improvements in or relating to rotary converters Expired / Lapsed 1938-01-19 — 0 Details
GB478417A Improvements in or relating to electrically driven fans Expired / Lapsed 1937-07-15 — 0 Details
GB277666A Electrically operated washing machine Expired / Lapsed 1927-09-13 — 0 Details
GB262114A Improvements in or relating to washing machines Expired / Lapsed 1926-11-24 — 0 Details
GB197692A GB197692A - - Google Patents Expired / Lapsed 1923-05-11 — 0 Details
FR90916E Device for cooling rotating machines, in particular electri… Expired / Lapsed 1966-09-26 1968-03-08 0 Details
US3366909A Contact-free electrical signal device Expired / Lapsed 1965-10-24 1968-01-30 0 Details
US3366908A Contact-free rotary resistor arrangement Expired / Lapsed 1965-10-22 1968-01-30 0 Details
US3351433A Method of producing monocrystalline semiconductor rods Expired / Lapsed 1966-07-06 1967-11-07 2 Details
US3349299A Power recitfier of the npnp type having recombination cente… Expired / Lapsed 1963-09-13 1967-10-24 2 Details
US3342551A Method and apparatus for producing a semiconducting compoun… Expired / Lapsed 1961-09-28 1967-09-19 2 Details
US3341772A Device for measuring locally dependent differences between … Expired / Lapsed 1964-10-21 1967-09-12 2 Details
US3315125A High-power ion and electron sources in cascade arrangement Expired / Lapsed 1963-06-14 1967-04-18 1 Details
US3304481A Circuit for direct current miniature motors without mechani… Expired / Lapsed 1964-07-29 1967-02-14 2 Details
US3292016A Superconducting three-phase current cable Expired / Lapsed 1963-09-23 1966-12-13 2 Details
US3291918A Magneto-electric signal transmission system Expired / Lapsed 1962-01-29 1966-12-13 2 Details
US3280392A Electronic semiconductor device of the four-layer junction … Expired / Lapsed 1962-05-08 1966-10-18 2 Details
US3265470A Method and apparatus for floating-zone melting of semicondu… Expired / Lapsed 1960-08-12 1966-08-09 2 Details
US3259755A Hall generator switching circuits Expired / Lapsed 1961-06-27 1966-07-05 2 Details
US3250971A Direct-current motor with commutator Expired / Lapsed 1964-01-20 1966-05-10 2 Details
US3243509A Apparatus for measuring the molten zone diameter in zone-me… Expired / Lapsed 1963-04-26 1966-03-29 2 Details
FR86315E semiconductor element and method for its manufacture Expired / Lapsed 1964-04-17 1966-01-24 0 Details
US3228104A Method of attaching an electric connection to a semiconduct… Expired / Lapsed 1962-04-18 1966-01-11 2 Details
US3226270A Method of crucible-free production of gallium arsenide rods… Expired / Lapsed 1963-09-24 1965-12-28 2 Details
US3223493A Method of crucible-free zone-melting of semiconductor mater… Expired / Lapsed 1961-06-09 1965-12-14 2 Details
US3221261A Amplifying system including a push-pull preamplifier and ou… Expired / Lapsed 1962-08-14 1965-11-30 1 Details
US3221219A Semiconductor device having a nickel surface in pressure sl… Expired / Lapsed 1962-08-10 1965-11-30 2 Details
US3204158A Semiconductor device Expired / Lapsed 1961-06-16 1965-08-31 2 Details
US3200316A Electronically commutated direct-current motor Expired / Lapsed 1963-05-09 1965-08-10 2 Details
US3200207A Method and means for recording and reproducing magnetograms Expired / Lapsed 1959-12-09 1965-08-10 2 Details
US3199630A Position sensing devices, particularly in hoisting and conv… Expired / Lapsed 1959-08-12 1965-08-10 1 Details
US3197633A Method and apparatus for separating ions of respectively di… Expired / Lapsed 1962-12-04 1965-07-27 2 Details
US3191434A Device for measuring torque on shafts Expired / Lapsed 1962-11-27 1965-06-29 2 Details
US3170323A Device for producing a torque or torsion responsive signal Expired / Lapsed 1960-09-20 1965-02-23 1 Details
US3163721A Transducer for magnetic recordings Expired / Lapsed 1960-06-23 1964-12-29 2 Details
US3159459A Method for producing semiconductor crystals Expired / Lapsed 1959-02-18 1964-12-01 2 Details
US3152933A Method of producing electronic semiconductor devices having… Expired / Lapsed 1962-06-06 1964-10-13 2 Details
US3140965A Vapor deposition onto stacked semiconductor wafers followed… Expired / Lapsed 1962-06-27 1964-07-14 2 Details
US3113841A Floating zone melting method for semiconductor rods Expired / Lapsed 1960-04-20 1963-12-10 1 Details
US3099534A Method for production of high-purity semiconductor material… Expired / Lapsed 1961-02-20 1963-07-30 1 Details
US3097335A Electric current inverter Expired / Lapsed 1960-11-18 1963-07-09 2 Details
US3093882A Method for producing a silicon semiconductor device Expired / Lapsed 1959-09-28 1963-06-18 1 Details
US3090926A Transistor amplifier with tunnel diode in emitter circuit Expired / Lapsed 1961-07-13 1963-05-21 2 Details
US3086156A Apparatus for controlling a powerrectifier system Expired / Lapsed 1960-08-17 1963-04-16 1 Details
US3078549A Method of producing semiconductor wafers Expired / Lapsed 1959-03-24 1963-02-26 2 Details
US3054952A System for measuring or indicating the three-phase power Expired / Lapsed 1959-04-15 1962-09-18 0 Details
US3050667A Method for producing an electric semiconductor device of si… Expired / Lapsed 1960-12-28 1962-08-21 1 Details
US3048711A Transistor reversible counting circuit with resistive coupl… Expired / Lapsed 1958-11-28 1962-08-07 0 Details
US3046414A Pulse generator for producing periodic pulses of varying wi… Expired / Lapsed 1961-04-13 1962-07-24 0 Details
US3046405A Transistor device Expired / Lapsed 1959-01-19 1962-07-24 0 Details
US3042494A Method for producing highest-purity silicon for electric se… Expired / Lapsed 1958-05-23 1962-07-03 2 Details
US3030189A Methods of producing substances of highest purity, particul… Expired / Lapsed 1958-05-19 1962-04-17 1 Details
US3030194A Processing of semiconductor devices Expired / Lapsed 1954-02-11 1962-04-17 2 Details
US3023360A Measurement method and apparatus Expired / Lapsed 1959-06-30 1962-02-27 0 Details
US3005917A Transistor counting circuit having resistor and diode inter… Expired / Lapsed 1958-11-28 1961-10-24 0 Details
US2999940A Encapsuled photoelectric semiconductor device Expired / Lapsed 1960-05-19 1961-09-12 0 Details
US2993301A Apparatus and process for making glass foil Expired / Lapsed 1959-07-30 1961-07-25 0 Details
US2992311A Method and apparatus for floatingzone melting of semiconduc… Expired / Lapsed 1960-09-28 1961-07-11 0 Details
US2988650A Hall-effect control element with utilization circuit Expired / Lapsed 1954-11-10 1961-06-13 0 Details
US2977518A Electric power translating apparatus for speed control of a… Expired / Lapsed 1956-10-11 1961-03-28 0 Details
US2972525A Crucible-free zone melting method and apparatus for produci… Expired / Lapsed 1958-04-10 1961-02-21 1 Details
US2946709A Power transistor with monocrystalline semiconductor body Expired / Lapsed 1958-07-21 1960-07-26 2 Details
US2946955A Measuring apparatus comprising a magnetic field-responsive … Expired / Lapsed 1954-08-25 1960-07-26 0 Details
US2945993A Compensated hall voltage generator Expired / Lapsed 1959-04-15 1960-07-19 0 Details
US2942243A Automatic recording system Expired / Lapsed 1955-09-02 1960-06-21 0 Details
US2936410A Silicon power transistor Expired / Lapsed 1959-03-25 1960-05-10 2 Details
FR1212682A Semiconductor transistor device Expired / Lapsed 1959-01-06 1960-03-25 0 Details
US2929006A Junction transistor Expired / Lapsed 1955-11-25 1960-03-15 0 Details
US2928761A Methods of producing junction-type semi-conductor devices Expired / Lapsed 1955-06-29 1960-03-15 2 Details
US2924760A Power transistors Expired / Lapsed 1958-11-25 1960-02-09 0 Details
US2924633A Ignition system for internal combustion engines Expired / Lapsed 1955-03-25 1960-02-09 0 Details
US2915703A Apparatus for measuring revolving speed or velocity ratios Expired / Lapsed 1955-03-24 1959-12-01 0 Details
US2910805A Apparatus and method for the production of glass foil Expired / Lapsed 1955-06-03 1959-11-03 0 Details
US2906945A Apparatus for effecting an electric control in response to … Expired / Lapsed 1953-11-12 1959-09-29 0 Details
US2898429A Crucible-free zone-melting apparatus Expired / Lapsed 1958-11-14 1959-08-04 0 Details
US2898483A Program controller particularly for machine tools Expired / Lapsed 1958-01-08 1959-08-04 0 Details
US2898528A Silicon semiconductor device Expired / Lapsed 1957-05-07 1959-08-04 2 Details
US2895100A Semiconductor junction-type rectifier systems Expired / Lapsed 1956-12-11 1959-07-14 0 Details
US2877397A Loop regulating systems for the speed control of roll drives Expired / Lapsed 1954-11-05 1959-03-10 0 Details
US2858275A Mixed-crystal semiconductor devices Expired / Lapsed 1955-12-20 1958-10-28 2 Details
US2849659A Direct-current and alternatingcurrent circuit interrupters Expired / Lapsed 1954-03-24 1958-08-26 0 Details
US2847335A Semiconductor devices and method of manufacturing them Expired / Lapsed 1954-08-17 1958-08-12 1 Details
US2843516A Semiconductor junction rectifier Expired / Lapsed 1956-02-13 1958-07-15 2 Details
US2814015A Hall generators of increased sensitivity Expired / Lapsed 1956-05-02 1957-11-19 0 Details
US2798989A Semiconductor devices and methods of their manufacture Expired / Lapsed 1952-03-10 1957-07-09 2 Details
US2798013A Method of producing junction-type semi-conductor devices, a… Expired / Lapsed 1956-07-19 1957-07-02 2 Details
FR1137399A Rectifiers, transistors, etc., of silicon, silicon carbide,… Expired / Lapsed 1955-07-07 1957-05-28 0 Details
US2793103A Method for producing rod-shaped bodies of crystalline mater… Expired / Lapsed 1955-02-18 1957-05-21 2 Details
FR1132101A Process for the production of a sintered body from a pulver… Expired / Lapsed 1955-06-20 1957-03-05 0 Details
US2779970A Extrusion molding apparatus Expired / Lapsed 1954-10-11 1957-02-05 0 Details
US2777098A Magnetically controlled electric counting apparatus Expired / Lapsed 1952-05-16 1957-01-08 0 Details
US2773184A Constant-current pulse generator Expired / Lapsed 1952-09-04 1956-12-04 0 Details
US2754464A Measuring and control device for dynamoelectric machines Expired / Lapsed 1955-01-13 1956-07-10 0 Details
US2750540A Selenium rectifiers and their manufacture Expired / Lapsed 1950-08-17 1956-06-12 2 Details
US2738452A Dry multi-pellet rectifiers Expired / Lapsed 1951-06-13 1956-03-13 2 Details
US2736858A Controllable electric resistance devices Expired / Lapsed 1952-07-08 1956-02-28 0 Details
US2705105A Apparatus for the coded representation of measuring values Expired / Lapsed 1952-04-16 1955-03-29 0 Details
FR1081675A Cooling device dry rectifier using liquid cooling medium Expired / Lapsed 1953-07-28 1954-12-22 0 Details
US2648805A Controllable electric resistance device Expired / Lapsed 1950-10-21 1953-08-11 0 Details
US2618718A High-speed electric switching apparatus Expired / Lapsed 1950-10-27 1952-11-18 0 Details
DE838035C Device for connecting elongated lights to form strips of li… Expired / Lapsed — 1952-03-27 0 Details
US2583854A Inductance coil with ceramic form for high frequency Expired / Lapsed 1949-10-05 1952-01-29 0 Details
DE828270C Hot wire relay for switching the auxiliary phase of single-… Expired / Lapsed 1950-02-18 1952-01-17 0 Details
DE814765C Electric oscillating piston Expired / Lapsed 1949-07-28 1951-09-24 0 Details
DE699892C Row clamp composed of individual bodies Expired / Lapsed 1939-03-07 1942-08-07 0 Details
US2227937A Alternating current converter Expired / Lapsed 1937-03-10 1941-01-07 0 Details
DE693239C Air-cooled dry rectifier column with cooling disks Expired / Lapsed 1937-11-04 1940-07-06 0 Details
DE691333C Test clamp Expired / Lapsed 1939-02-12 1940-05-23 0 Details
DE684276C Process for drying ceramic moldings Expired / Lapsed 1936-01-25 1939-11-25 0 Details
DE683525C Device for sparkless opening and closing of electrical dire… Expired / Lapsed 1937-12-07 1939-11-08 0 Details
US2175389A Electrically conducting whale line Expired / Lapsed 1936-04-30 1939-10-10 0 Details
US2164405A Device for facilitating the starting of refrigerating appar… Expired / Lapsed 1937-08-20 1939-07-04 0 Details
US2154275A Electrode supporting structure Expired / Lapsed 1936-10-30 1939-04-11 0 Details
US2147447A Glow cathode Expired / Lapsed 1937-06-26 1939-02-14 0 Details
DE664523C Arrangement for the operation of electric arc welding devic… Expired / Lapsed 1933-05-24 1938-08-30 0 Details
US2128090A Refrigerating apparatus of the compression type Expired / Lapsed 1937-12-16 1938-08-23 0 Details
DE657692C Grease lubrication device for roller bearings Expired / Lapsed 1935-11-24 1938-03-10 0 Details
US2103303A Device for producing electron rays of high energy Expired / Lapsed 1936-03-04 1937-12-28 0 Details
DE654510C Device for connecting auxiliary devices to electrical count… Expired / Lapsed 1935-09-25 1937-12-21 0 Details
DE634161C Automatic periodic switching device with temperature-depend… Expired / Lapsed 1934-10-16 1936-08-19 0 Details
US2047554A Manufacture of tubes from polystyrene and the like substanc… Expired / Lapsed 1935-02-15 1936-07-14 0 Details
DE628167C Valve, the shut-off body of which is connected to a flexibl… Expired / Lapsed 1934-09-09 1936-03-30 0 Details
FR787318A Process for the production of hollow articles of polystyrol… Expired / Lapsed 1935-02-12 1935-09-20 0 Details
DE617088C Electromagnetically operated piston pump Expired / Lapsed 1931-11-01 1935-08-12 0 Details
DE616468C Electric sewing machine drive Expired / Lapsed — 1935-07-29 0 Details
DE615786C Arrangement for regulating the reactive power taken from an… Expired / Lapsed 1932-10-06 1935-07-12 0 Details
DE608747C Multi-conductor cable termination, especially for measuring… Expired / Lapsed 1931-12-03 1935-01-30 0 Details
DE599909C Electric switch with one tripping device each for both dire… Expired / Lapsed 1927-10-27 1934-07-11 0 Details
US1948616A Cable for communication circuits Expired / Lapsed 1930-07-21 1934-02-27 0 Details
US1934821A Device for producing colored pictures Expired / Lapsed 1932-05-28 1933-11-14 0 Details
DE587525C Device for the automatic regulation of the current of the a… Expired / Lapsed 1931-08-01 1933-11-04 0 Details
US1922711A Remote controlling plant Expired / Lapsed 1930-06-26 1933-08-15 0 Details
US1921085A Electrical vacuum cleaner Expired / Lapsed 1931-09-14 1933-08-08 0 Details
FR747996A Electrical measuring, regulating or controlling device usin… Expired / Lapsed 1932-12-23 1933-06-27 0 Details
US1911976A Electron tube Expired / Lapsed 1930-01-07 1933-05-30 0 Details
US1909065A Protective arrangement for electric installations Expired / Lapsed 1930-08-28 1933-05-16 0 Details
DE576685C Contactor Expired / Lapsed 1930-07-02 1933-05-12 0 Details
DE574975C Electric wall fan with flap lock Expired / Lapsed 1931-05-21 1933-04-21 0 Details
DE572354C Device for removing press residues, especially for lead pre… Expired / Lapsed 1932-03-24 1933-03-16 0 Details
US1897223A Process and apparatus for operating continuous absorption m… Expired / Lapsed 1929-10-24 1933-02-14 0 Details
DE569618C Clamp for fastening electrical cables to control panels Expired / Lapsed — 1933-02-06 0 Details
US1894359A Absorption refrigerating apparatus Expired / Lapsed 1932-03-03 1933-01-17 0 Details
US1892997A Electric tool with an electric motor mounted in the handle Expired / Lapsed 1931-04-25 1933-01-03 0 Details
DE564826C Device for conveying gases or liquids with a helical gear i… Expired / Lapsed — 1932-11-23 0 Details
DE561402C A control device that works as a function of the speed, par… Expired / Lapsed 1928-02-17 1932-10-13 0 Details
DE538654C Insulating tube for laying electrical lines Expired / Lapsed 1929-08-09 1931-11-16 0 Details
DE533609C Firedamp-proof connector Expired / Lapsed 1928-05-25 1931-09-17 0 Details
DE525878C Force switch for control devices Expired / Lapsed 1928-07-14 1931-06-04 0 Details
US1786920A Process for producing thin insulating layers upon wires Expired / Lapsed 1929-01-10 1930-12-30 0 Details
DE513330C Arrangement for regulating centrifugal pumps Expired / Lapsed — 1930-11-26 0 Details
DE505122C Resonance relay with a loop-shaped spring that is excited t… Expired / Lapsed 1927-09-28 1930-08-14 0 Details
FR686552A Remote transmission conductor cable with metal protection Expired / Lapsed 1929-12-11 1930-07-28 0 Details
DE500204C Lowering pump unit with diving bell Expired / Lapsed 1928-06-29 1930-06-19 0 Details
DE491624C Automatic control for the washing and rinsing water inflow … Expired / Lapsed 1925-10-03 1930-02-12 0 Details
DE491421C Contactor for counter Expired / Lapsed 1928-10-10 1930-02-10 0 Details
US1735964A Device for transmitting pressure impulses Expired / Lapsed 1927-04-21 1929-11-19 0 Details
US1681196A Device for breaking the connections of electric circuits Expired / Lapsed 1926-07-02 1928-08-21 0 Details
DE452437C Method and arrangement for cleaning the collecting electrod… Expired / Lapsed 1924-08-03 1927-11-10 0 Details
DE450040C Arrangement for the implementation of periodic switching pr… Expired / Lapsed 1925-03-01 1927-09-27 0 Details
FR609989A Electric gas purification installation with mechanical rect… Expired / Lapsed 1926-01-26 1926-08-27 0 Details
FR597460A Handle and handle coupling Expired / Lapsed 1925-04-29 1925-11-21 0 Details
DE389309C Electric soldering iron with inductive heating Expired / Lapsed 1920-03-10 1924-02-07 0 Details
DE388555C Circuit for reducing the voltage drop in transformers for r… Expired / Lapsed 1920-09-22 1924-01-15 0 Details
DE359733C Cell switch Expired / Lapsed 1920-07-16 1922-09-26 0 Details
US1328041A Electric relay and the like Expired / Lapsed 1913-08-15 1920-01-13 0 Details
US1187795A Apparatus for converting heat energy. Expired / Lapsed 1913-10-31 1916-06-20 0 Details
US879476A Centrifugal pump with funnel-shaped guide-pipes in the suct… Expired / Lapsed 1906-10-25 1908-02-18 0 Details