Transformerless

Patents Grantslast 30 patents

  • Information Patent Grant

    Variable pulse recharging battery pack

    • Patent number 5,694,022
    • Issue date Dec 2, 1997
    • SelfCHARGE, Inc.
    • Craig S. Ranta
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Non-isolated thermally responsive battery charger

    • Patent number 4,853,607
    • Issue date Aug 1, 1989
    • Black & Decker Inc.
    • Richard T. Walter
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Charging base for a battery-powered appliance

    • Patent number 4,716,352
    • Issue date Dec 29, 1987
    • Black & Decker, Inc.
    • Richard L. Hurn
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Integrated battery and recharger

    • Patent number 4,622,507
    • Issue date Nov 11, 1986
    • David Persen
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Current pulse producing circuit

    • Patent number 4,591,778
    • Issue date May 27, 1986
    • Solid State Chargers Research & Development
    • Varnum S. Holland
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply with current regulating circuit

    • Patent number 4,531,084
    • Issue date Jul 23, 1985
    • Solid State Chargers Research and Development Limited Partnership
    • Philip A. Hoffman
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Battery charger

    • Patent number 4,482,856
    • Issue date Nov 13, 1984
    • Technion Research and Development Foundation, Ltd.
    • Paul L. Meretsky
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Battery charging circuit

    • Patent number 3,943,423
    • Issue date Mar 9, 1976
    • Philip A. Hoffman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3876921

    • Patent number 3,876,921
    • Issue date Apr 8, 1975
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3733533

    • Patent number 3,733,533
    • Issue date May 15, 1973
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3708738

    • Patent number 3,708,738
    • Issue date Jan 2, 1973
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3539898

    • Patent number 3,539,898
    • Issue date Nov 10, 1970
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3160805

    • Patent number 3,160,805
    • Issue date Dec 8, 1964
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER