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Masao Yaji

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Image forming apparatus
    • Patent number 10,871,927
    • Issue date Dec 22, 2020
    • Oki Data Corporation
    • Keisuke Watanabe
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Image forming apparatus
    • Patent number 8,294,963
    • Issue date Oct 23, 2012
    • Oki Data Corporation
    • Masao Yaji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Power source device and image forming apparatus
    • Patent number 8,265,511
    • Issue date Sep 11, 2012
    • Oki Data Corporation
    • Toru Kosaka
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Piezoelectric transformer driving device, cold-cathode tube inverte...
    • Patent number 8,174,200
    • Issue date May 8, 2012
    • Oki Data Corporation
    • Toru Kosaka
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Image forming apparatus
    • Patent number 7,710,601
    • Issue date May 4, 2010
    • Oki Data Corporation
    • Masao Yaji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Image forming method and apparatus and optical head
    • Patent number 7,480,074
    • Issue date Jan 20, 2009
    • Oki Data Corporation
    • Masao Yaji
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Printing apparatus
    • Patent number 7,358,983
    • Issue date Apr 15, 2008
    • Oki Data Corporation
    • Masao Yaji
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Ink jet printer
    • Patent number 6,168,252
    • Issue date Jan 2, 2001
    • Oki Data Corporation
    • Masao Yaji
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet printer
    • Patent number 6,084,605
    • Issue date Jul 4, 2000
    • Oki Data Corporation
    • Masao Yaji
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

  • Information Patent Application

    IMAGE FORMING APPARATUS
    • Publication number 20200133593
    • Publication date Apr 30, 2020
    • Oki Data Corporation
    • Keisuke WATANABE
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    PIEZOELECTRIC TRANSFORMER DRIVING DEVICE, COLD-CATHODE TUBE INVERTE...
    • Publication number 20100188011
    • Publication date Jul 29, 2010
    • Oki Data Corporation
    • Toru KOSAKA
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    POWER SOURCE DEVICE AND IMAGE FORMING APPARATUS
    • Publication number 20100104313
    • Publication date Apr 29, 2010
    • Oki Data Corporation
    • Toru KOSAKA
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image forming apparatus
    • Publication number 20080106765
    • Publication date May 8, 2008
    • Oki Data Corporation
    • Masao Yaji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Image forming apparatus
    • Publication number 20070171478
    • Publication date Jul 26, 2007
    • Oki Data Corporation
    • Masao Yaji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Printing apparatus
    • Publication number 20060164499
    • Publication date Jul 27, 2006
    • Masao Yaji
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image forming method and apparatus and optical head
    • Publication number 20040169718
    • Publication date Sep 2, 2004
    • Oki Data Corporation
    • Masao Yaji
    • G06 - COMPUTING CALCULATING COUNTING