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  • H01F38/04
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HELECTRICITY H01Electric elements H01FMAGNETS INDUCTANCES TRANSFORMERS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES H01F38/00Adaptations of transformers or inductances for specific applications or functions

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H01F38/04for frequency changing
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self mixing frequency doubler tripler circuits for wireless communi...
    • Patent number 12,132,512
    • Issue date Oct 29, 2024
    • SWIFTLINK TECHNOLOGIES INC.
    • Min-Yu Huang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical power distribution network and process
    • Patent number 11,637,429
    • Issue date Apr 25, 2023
    • Third Equation Ltd
    • Matthew Williams
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical power distribution network and process
    • Patent number 10,742,035
    • Issue date Aug 11, 2020
    • Third Equation Ltd
    • Matthew Williams
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Medium voltage power converter formed using low voltage drives
    • Patent number 7,307,361
    • Issue date Dec 11, 2007
    • DRS Power & Control Technologies, Inc.
    • Ashish R. Bendre
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Transformer with voltage regulating means
    • Patent number 6,995,646
    • Issue date Feb 7, 2006
    • ABB AB
    • Udo Fromm
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Envelope for slip-ring contacting members in high-power rotary curr...
    • Patent number 6,472,791
    • Issue date Oct 29, 2002
    • General Electric Copmay
    • Robert Henry Rehder
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rotating variable frequency transformer with high voltage cables
    • Patent number 6,456,021
    • Issue date Sep 24, 2002
    • General Electric Company
    • Donald Gordon McLaren
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Five-legged core type frequency triplo-multiplier
    • Patent number 4,901,213
    • Issue date Feb 13, 1990
    • Kanazawa University
    • Kazuo Bessho
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Static magnetic frequency multiplies
    • Patent number 4,390,941
    • Issue date Jun 28, 1983
    • Siemens Aktiengesellschaft
    • Wilhelm Benecke
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Stationary magnetic frequency multiplier
    • Patent number 4,387,419
    • Issue date Jun 7, 1983
    • Siemens Aktiengesellschaft
    • Wilhelm Benecke
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Subharmonic frequency generator
    • Patent number 4,053,822
    • Issue date Oct 11, 1977
    • Bell Telephone Laboratories, Incorporated
    • Herman Irving Tillinger
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Circuit for the production of an open alternating magnetic field
    • Patent number 4,035,745
    • Issue date Jul 12, 1977
    • Sachs-Systemtechnik GmbH
    • Hans-Peter Doetsch
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Self-induction device for generating harmonics
    • Patent number 3,949,337
    • Issue date Apr 6, 1976
    • Elphiac
    • Joseph Trine
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3913005
    • Patent number 3,913,005
    • Issue date Oct 14, 1975
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3777100
    • Patent number 3,777,100
    • Issue date Dec 4, 1973
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3710135
    • Patent number 3,710,135
    • Issue date Jan 9, 1973
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3559032
    • Patent number 3,559,032
    • Issue date Jan 26, 1971
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3543133
    • Patent number 3,543,133
    • Issue date Nov 24, 1970
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3536983
    • Patent number 3,536,983
    • Issue date Oct 27, 1970
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3393356
    • Patent number 3,393,356
    • Issue date Jul 16, 1968
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3392320
    • Patent number 3,392,320
    • Issue date Jul 9, 1968
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3349317
    • Patent number 3,349,317
    • Issue date Oct 24, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3343054
    • Patent number 3,343,054
    • Issue date Sep 19, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3311810
    • Patent number 3,311,810
    • Issue date Mar 28, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3309604
    • Patent number 3,309,604
    • Issue date Mar 14, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3295050
    • Patent number 3,295,050
    • Issue date Dec 27, 1966
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3292074
    • Patent number 3,292,074
    • Issue date Dec 13, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3274481
    • Patent number 3,274,481
    • Issue date Sep 20, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3264549
    • Patent number 3,264,549
    • Issue date Aug 2, 1966
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3263148
    • Patent number 3,263,148
    • Issue date Jul 26, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents