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Akira Kawai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Battery pack for electric power tool
    • Patent number 10,468,648
    • Issue date Nov 5, 2019
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Masaki Ikeda
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool adaptor and electric tool system using same
    • Patent number 9,746,860
    • Issue date Aug 29, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Masaaki Sakaue
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Battery pack
    • Patent number 9,484,567
    • Issue date Nov 1, 2016
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Akira Kawai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Charger apparatus capable of determining deterioration of second ba...
    • Patent number 9,178,380
    • Issue date Nov 3, 2015
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Akira Kawai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Charge circuit, and battery-charger assemblage with the charge circuit
    • Patent number 9,142,993
    • Issue date Sep 22, 2015
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Akira Kawai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric tool
    • Patent number 8,847,532
    • Issue date Sep 30, 2014
    • Panasonic Corporation
    • Hiroshi Miyazaki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Charging circuit
    • Patent number 8,405,348
    • Issue date Mar 26, 2013
    • Panasonic Electric Works Power Tools Co., Ltd.
    • Akira Kawai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electrical apparatus
    • Patent number 7,612,525
    • Issue date Nov 3, 2009
    • Matsushita Electric Works, Ltd.
    • Masatoshi Ito
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Control drive circuit for electric power tool
    • Patent number 7,570,000
    • Issue date Aug 4, 2009
    • Matsushita Electric Works, Ltd.
    • Hiroshi Miyazaki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    ELECTRIC TOOL SYSTEM
    • Publication number 20180048249
    • Publication date Feb 15, 2018
    • Panasonic Intellectual Property Management Co., Ltd.
    • Masaki IKEDA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY PACK FOR ELECTRIC POWER TOOL
    • Publication number 20160226044
    • Publication date Aug 4, 2016
    • Panasonic Intellectual Property Management Co., Ltd.
    • Masaki Ikeda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    BATTERY PACK
    • Publication number 20160056442
    • Publication date Feb 25, 2016
    • Panasonic Intellectual Property Management Co., Ltd.
    • Akira KAWAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRIC TOOL ADAPTOR AND ELECTRIC TOOL SYSTEM USING SAME
    • Publication number 20130154584
    • Publication date Jun 20, 2013
    • PANASONIC CORPORATION
    • Masaaki Sakaue
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    CHARGE CIRCUIT, AND BATTERY-CHARGER ASSEMBLAGE WITH THE CHARGE CIRCUIT
    • Publication number 20130154578
    • Publication date Jun 20, 2013
    • PANASONIC CORPORATION
    • Akira KAWAI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    CHARGER
    • Publication number 20130063079
    • Publication date Mar 14, 2013
    • PANASONIC CORPORATION
    • Akira KAWAI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20130015789
    • Publication date Jan 17, 2013
    • PANASONIC CORPORATION
    • Hiroshi Miyazaki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Charging Circuit
    • Publication number 20110043166
    • Publication date Feb 24, 2011
    • Panasonic Electric Works Power Tools Co., Ltd.
    • Akira Kawai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Control drive circuit for electric power tool
    • Publication number 20070200516
    • Publication date Aug 30, 2007
    • MATSUSHITA ELECTRIC WORKS, Ltd.
    • Hiroshi Miyazaki
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Electrical apparatus
    • Publication number 20060214627
    • Publication date Sep 28, 2006
    • MATSUSHITA ELECTRIC WORKS, Ltd.
    • Masatoshi Ito
    • H01 - BASIC ELECTRIC ELEMENTS