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Masao Doi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Surgical microscope
    • Patent number 10,295,816
    • Issue date May 21, 2019
    • Mitaka Kohki Co., Ltd.
    • Shinpei Omote
    • G02 - OPTICS
  • Information Patent Grant

    Medical stand apparatus
    • Patent number 9,822,922
    • Issue date Nov 21, 2017
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Surgical microscope system
    • Patent number 9,746,659
    • Issue date Aug 29, 2017
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • G02 - OPTICS
  • Information Patent Grant

    Surgical microscope apparatus and sealed drape
    • Patent number 9,563,045
    • Issue date Feb 7, 2017
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Surgical microscope system
    • Patent number 9,459,437
    • Issue date Oct 4, 2016
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • G02 - OPTICS
  • Information Patent Grant

    Automatic balancing structure of medical balancing stand
    • Patent number 9,400,079
    • Issue date Jul 26, 2016
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Automatic balancing structure of medical balancing stand
    • Patent number 8,979,042
    • Issue date Mar 17, 2015
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Base anchoring structure
    • Patent number 8,955,817
    • Issue date Feb 17, 2015
    • Mitaka Kohki Co., Ltd.
    • Yusuke Nakata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Holding arm apparatus for medical tool
    • Patent number 8,910,537
    • Issue date Dec 16, 2014
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Surgical microscope system
    • Patent number 8,885,250
    • Issue date Nov 11, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Surgical microscope with a movable illumination part
    • Patent number 8,634,133
    • Issue date Jan 21, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Surgical microscope system
    • Patent number 8,270,073
    • Issue date Sep 18, 2012
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Optical measuring system
    • Patent number 7,982,864
    • Issue date Jul 19, 2011
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Variable magnification microscope
    • Patent number 6,816,304
    • Issue date Nov 9, 2004
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • G02 - OPTICS
  • Information Patent Grant

    Microscope for MRI and support stand for MRI
    • Patent number 6,563,633
    • Issue date May 13, 2003
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Automatic balancing apparatus for balancing stand
    • Patent number 6,186,023
    • Issue date Feb 13, 2001
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Medical stand apparatus
    • Patent number 6,045,104
    • Issue date Apr 4, 2000
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

  • Information Patent Application

    SURGICAL MICROSCOPE APPARATUS
    • Publication number 20200054411
    • Publication date Feb 20, 2020
    • Mitaka Kohki Co., Ltd.
    • Katsuyuki NAKAMURA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    EYEPIECE STRUCTURE FOR SURGICAL MICROSCOPE
    • Publication number 20170293135
    • Publication date Oct 12, 2017
    • Mitaka Kohki Co., Ltd.
    • Shuji INABA
    • G02 - OPTICS
  • Information Patent Application

    SURGICAL MICROSCOPE
    • Publication number 20170293132
    • Publication date Oct 12, 2017
    • Mitaka Kohki Co., Ltd.
    • Shinpei OMOTE
    • G02 - OPTICS
  • Information Patent Application

    MEDICAL STAND APPARATUS
    • Publication number 20160281911
    • Publication date Sep 29, 2016
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SURGICAL MICROSCOPE SYSTEM
    • Publication number 20150301326
    • Publication date Oct 22, 2015
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • G02 - OPTICS
  • Information Patent Application

    AUXILIARY ARM ATTACHING STRUCTURE OF STAND APPARATUS
    • Publication number 20140293408
    • Publication date Oct 2, 2014
    • Mitaka Kohki Co., Ltd.
    • Katsuyuki NAKAMURA
    • G02 - OPTICS
  • Information Patent Application

    SURGICAL MICROSCOPE SYSTEM
    • Publication number 20140247482
    • Publication date Sep 4, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • G02 - OPTICS
  • Information Patent Application

    SURGICAL MICROSCOPE SYSTEM
    • Publication number 20140211304
    • Publication date Jul 31, 2014
    • Mitaka Kohki Co., Ltd.
    • Katsuyuki NAKAMURA
    • G02 - OPTICS
  • Information Patent Application

    AUTOMATIC BALANCING STRUCTURE OF MEDICAL BALANCING STAND
    • Publication number 20140157937
    • Publication date Jun 12, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    AUTOMATIC BALANCING STRUCTURE OF MEDICAL BALANCING STAND
    • Publication number 20140151522
    • Publication date Jun 5, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    ELECTRONIC IMAGE DISPLAY APPARATUS
    • Publication number 20140139916
    • Publication date May 22, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • G02 - OPTICS
  • Information Patent Application

    SURGICAL MICROSCOPE APPARATUS
    • Publication number 20140055850
    • Publication date Feb 27, 2014
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Holding Arm Apparatus for Medical Tool
    • Publication number 20110162476
    • Publication date Jul 7, 2011
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SURGICAL MICROSCOPE SYSTEM
    • Publication number 20110134518
    • Publication date Jun 9, 2011
    • Mitaka Kohki Co., Ltd.
    • Masao Doi
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SURGICAL MICROSCOPE
    • Publication number 20110122490
    • Publication date May 26, 2011
    • Mitaka Kohki Co., Ltd.
    • Masao DOI
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    BASE ANCHORING STRUCTURE
    • Publication number 20110114817
    • Publication date May 19, 2011
    • Mitaka Kohki Co., Ltd.
    • Yusuke NAKATA
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    STEREOSCOPIC IMAGE DISPLAY
    • Publication number 20100259820
    • Publication date Oct 14, 2010
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    OPTICAL MEASURING SYSTEM
    • Publication number 20090213362
    • Publication date Aug 27, 2009
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SURGICAL MICROSCOPE SYSTEM
    • Publication number 20080231948
    • Publication date Sep 25, 2008
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    Variable magnification microscope
    • Publication number 20030133188
    • Publication date Jul 17, 2003
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • G02 - OPTICS
  • Information Patent Application

    Microscope for MRI and support stand for MRI
    • Publication number 20010038489
    • Publication date Nov 8, 2001
    • Mitaka Kohki Co., Ltd.
    • Katsushige Nakamura
    • G02 - OPTICS