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Mitsuaki Hayakawa

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mechanism for preventing skew of cut paper sheet
    • Patent number 5,092,579
    • Issue date Mar 3, 1992
    • Hitachi Koki Co., Ltd.
    • Hiroyoshi Tokoro
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Cleaner for toner fixing device
    • Patent number 4,821,077
    • Issue date Apr 11, 1989
    • Hitachi Koki Co., Ltd.
    • Mitsuaki Hayakawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Duplex printing machine
    • Patent number 4,806,979
    • Issue date Feb 21, 1989
    • Hitachi Koki Co., Ltd.
    • Hiroyoshi Tokoro
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL