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Norikazu Iwasaki

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  • Tochigi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Secondary batteries having a protective circuit
    • Patent number 7,163,757
    • Issue date Jan 16, 2007
    • Sony Corp.
    • Norikazu Iwasaki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Heat-sensitive material and heat-sensitive element
    • Patent number 6,977,343
    • Issue date Dec 20, 2005
    • Sony Corporation
    • Kazutaka Furuta
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Secondary batteries having a protective circuit
    • Patent number 6,917,505
    • Issue date Jul 12, 2005
    • Sony Chemicals Corp.
    • Norikazu Iwasaki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Protective element
    • Patent number 6,661,633
    • Issue date Dec 9, 2003
    • Sony Chemicals Corp.
    • Kazutaka Furuta
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method for manufacturing a PTC element
    • Patent number 6,656,304
    • Issue date Dec 2, 2003
    • Sony Chemicals Corp.
    • Kazutaka Furuta
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Protective element
    • Patent number 6,556,403
    • Issue date Apr 29, 2003
    • Sony Chemicals Corporation
    • Kazutaka Furuta
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Protective device
    • Patent number 6,452,475
    • Issue date Sep 17, 2002
    • Sony Chemicals Corp.
    • Masami Kawazu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Overcurrent protection device
    • Patent number 6,351,361
    • Issue date Feb 26, 2002
    • Sony Chemicals Corporation
    • Masami Kawazu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    PTC-element, protective device and electric circuit board
    • Patent number 6,114,672
    • Issue date Sep 5, 2000
    • Sony Corporation
    • Norikazu Iwasaki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Battery and protecting element therefor
    • Patent number 5,939,217
    • Issue date Aug 17, 1999
    • Sony Chemicals Corporation
    • Hisaya Tamura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Protective device
    • Patent number 5,712,610
    • Issue date Jan 27, 1998
    • Sony Chemicals Corp.
    • Motohide Takeichi
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents