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Ryohei Ashihara

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Manganese dry battery
    • Patent number 7,169,507
    • Issue date Jan 30, 2007
    • Matsushita Electric Industrial Co., Ltd.
    • Koji Inokuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Battery
    • Patent number 7,157,182
    • Issue date Jan 2, 2007
    • Matsushita Electric Industrial Co., Ltd.
    • Seiji Wada
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Manganese dry batteries
    • Patent number 6,500,584
    • Issue date Dec 31, 2002
    • Matsushita Electric Industrial Co., Ltd.
    • Ryohei Ashihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method of manufacturing zinc-titanium mother alloy and manganese dr...
    • Patent number 5,853,920
    • Issue date Dec 29, 1998
    • Mitsui Mining & Smelting Co., Ltd.
    • Hajime Murakami
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Manganese dry battery
    • Patent number 5,595,836
    • Issue date Jan 21, 1997
    • Matsushita Electric Industrial Co., Ltd.
    • Eiji Tano
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Dry cell
    • Patent number 5,017,445
    • Issue date May 21, 1991
    • Matsushita Electric Industrial Co., Ltd.
    • Ryohei Ashihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Metal jacket and dry cell using the same
    • Patent number 4,965,149
    • Issue date Oct 23, 1990
    • Matsushita Electric Industrial Co., Ltd.
    • Ryohei Ashihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Dry cell
    • Patent number 4,927,719
    • Issue date May 22, 1990
    • Matsushita Electric Industrial Co., Ltd.
    • Ryohei Ashihara
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Battery
    • Publication number 20040209164
    • Publication date Oct 21, 2004
    • Seiji Wada
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Manganese dry battery
    • Publication number 20040062984
    • Publication date Apr 1, 2004
    • Koji Inokuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Manganese dry battery
    • Publication number 20030013014
    • Publication date Jan 16, 2003
    • Ryohei Ashihara
    • H01 - BASIC ELECTRIC ELEMENTS