TREA

Takamasa Sakamoto

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zoom lens
    • Patent number 7,911,719
    • Issue date Mar 22, 2011
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G02 - OPTICS
  • Information Patent Grant

    Digital camera with a collapsible lens barrel
    • Patent number 7,301,577
    • Issue date Nov 27, 2007
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Lens barrels
    • Patent number 7,131,773
    • Issue date Nov 7, 2006
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Zoom finder drive mechanisms
    • Patent number 7,116,901
    • Issue date Oct 3, 2006
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Lens barrel extending and retracting mechanisms
    • Patent number 7,035,019
    • Issue date Apr 25, 2006
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Lens barrels
    • Patent number 7,019,915
    • Issue date Mar 28, 2006
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G02 - OPTICS
  • Information Patent Grant

    Camera having compact layout
    • Patent number 6,282,382
    • Issue date Aug 28, 2001
    • Minolta Co., Ltd.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Single lens reflex camera
    • Patent number 6,183,142
    • Issue date Feb 6, 2001
    • Minolta Co., Ltd.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera
    • Patent number 6,169,856
    • Issue date Jan 2, 2001
    • Minolta Co., Ltd.
    • Takamasa Sakamoto
    • G02 - OPTICS
  • Information Patent Grant

    Dual dial apparatus
    • Patent number 5,950,035
    • Issue date Sep 7, 1999
    • Minolta Co., Ltd.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Field frame changeover mechanism for viewfinder
    • Patent number 5,875,364
    • Issue date Feb 23, 1999
    • Minolta Co., Ltd.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Field frame changeover mechanism for viewfinder
    • Patent number 5,506,647
    • Issue date Apr 9, 1996
    • Minolta Camera Kabushiki Kaisha
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    ZOOM LENS
    • Publication number 20090273847
    • Publication date Nov 5, 2009
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G02 - OPTICS
  • Information Patent Application

    Zoom finder drive mechanisms
    • Publication number 20050254814
    • Publication date Nov 17, 2005
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Lens barrels
    • Publication number 20050254140
    • Publication date Nov 17, 2005
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G02 - OPTICS
  • Information Patent Application

    Lens barrels
    • Publication number 20050254815
    • Publication date Nov 17, 2005
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Lens barrel extending and retracting mechanisms
    • Publication number 20050254144
    • Publication date Nov 17, 2005
    • Asia Optical Co., Inc.
    • Takamasa Sakamoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Digital camera
    • Publication number 20040227844
    • Publication date Nov 18, 2004
    • Takamasa Sakamoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE