Patent Explorer
Browse, filter, and analyze 80 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB782774A | Improvements in or relating to resistance devices for generating a hall voltage | Siemens Schuckertwerke AG | Expired / Lapsed | 1955-07-26 | — | 1975-07-26 | 0.0 yrs | 0 | |
| GB478417A | Improvements in or relating to electrically driven fans | Siemens Schuckertwerke AG | Expired / Lapsed | 1937-07-15 | — | 1957-07-15 | 0.0 yrs | 0 | |
| US3366909A | Contact-free electrical signal device | Siemens Schuckertwerke AG | Expired / Lapsed | 1965-10-24 | 1968-01-30 | 1985-10-24 | 0.0 yrs | 0 | |
| US3366908A | Contact-free rotary resistor arrangement | Siemens Schuckertwerke AG | Expired / Lapsed | 1965-10-22 | 1968-01-30 | 1985-10-22 | 0.0 yrs | 0 | |
| US3349299A | Power recitfier of the npnp type having recombination centers therein | Siemens Schuckertwerke AG | Expired / Lapsed | 1963-09-13 | 1967-10-24 | 1983-09-13 | 0.0 yrs | 2 | |
| US3341772A | Device for measuring locally dependent differences between the magnetic field gradient at different points of a magnetic field | Siemens Schuckertwerke AG | Expired / Lapsed | 1964-10-21 | 1967-09-12 | 1984-10-21 | 0.0 yrs | 2 | |
| US3315125A | High-power ion and electron sources in cascade arrangement | Siemens Schuckertwerke AG | Expired / Lapsed | 1963-06-14 | 1967-04-18 | 1983-06-14 | 0.0 yrs | 1 | |
| US3304481A | Circuit for direct current miniature motors without mechanical commutators | Siemens Schuckertwerke AG | Expired / Lapsed | 1964-07-29 | 1967-02-14 | 1984-07-29 | 0.0 yrs | 2 | |
| US3291918A | Magneto-electric signal transmission system | Siemens Schuckertwerke AG | Expired / Lapsed | 1962-01-29 | 1966-12-13 | 1982-01-29 | 0.0 yrs | 2 | |
| US3280392A | Electronic semiconductor device of the four-layer junction type | Siemens Schuckertwerke AG | Expired / Lapsed | 1962-05-08 | 1966-10-18 | 1982-05-08 | 0.0 yrs | 2 | |
| US3259755A | Hall generator switching circuits | Siemens Schuckertwerke AG | Expired / Lapsed | 1961-06-27 | 1966-07-05 | 1981-06-27 | 0.0 yrs | 2 | |
| US3243509A | Apparatus for measuring the molten zone diameter in zone-melting processes | Siemens Schuckertwerke AG | Expired / Lapsed | 1963-04-26 | 1966-03-29 | 1983-04-26 | 0.0 yrs | 2 | |
| US3221261A | Amplifying system including a push-pull preamplifier and output switching amplifier | Siemens Schuckertwerke AG | Expired / Lapsed | 1962-08-14 | 1965-11-30 | 1982-08-14 | 0.0 yrs | 1 | |
| US3199630A | Position sensing devices, particularly in hoisting and conveying systems | Siemens Schuckertwerke AG | Expired / Lapsed | 1959-08-12 | 1965-08-10 | 1979-08-12 | 0.0 yrs | 1 | |
| US3200316A | Electronically commutated direct-current motor | Siemens Schuckertwerke AG | Expired / Lapsed | 1963-05-09 | 1965-08-10 | 1983-05-09 | 0.0 yrs | 2 | |
| US3200207A | Method and means for recording and reproducing magnetograms | Siemens Schuckertwerke AG | Expired / Lapsed | 1959-12-09 | 1965-08-10 | 1979-12-09 | 0.0 yrs | 2 | |
| US3152933A | Method of producing electronic semiconductor devices having a monocrystalline body with zones of respectively different conductance | Siemens Schuckertwerke AG | Expired / Lapsed | 1962-06-06 | 1964-10-13 | 1982-06-06 | 0.0 yrs | 2 | |
| US3140965A | Vapor deposition onto stacked semiconductor wafers followed by particular cooling | Siemens Schuckertwerke AG | Expired / Lapsed | 1962-06-27 | 1964-07-14 | 1982-06-27 | 0.0 yrs | 2 | |
| US3099534A | Method for production of high-purity semiconductor materials for electrical purposes | Siemens Schuckertwerke AG | Expired / Lapsed | 1961-02-20 | 1963-07-30 | 1981-02-20 | 0.0 yrs | 1 | |
| US3097335A | Electric current inverter | Siemens Schuckertwerke AG | Expired / Lapsed | 1960-11-18 | 1963-07-09 | 1980-11-18 | 0.0 yrs | 2 |
Showing 1 to 20 of 80 patents
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