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Isamu Hirai

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  • Tokyo, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical Device and Single Lens Reflex Camera
    • Publication number 20140168499
    • Publication date Jun 19, 2014
    • RICOH IMAGING COMPANY, LTD.
    • Naohito Sasaki
    • G02 - OPTICS
  • Information Patent Application

    IMAGE PICKUP DEVICE
    • Publication number 20100117182
    • Publication date May 13, 2010
    • HOYA CORPORATION
    • Isamu HIRAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    IMAGE SURFACE ILLUMINANCE VARYING APPARATUS, EXPOSURE CORRECTING AP...
    • Publication number 20090309993
    • Publication date Dec 17, 2009
    • PENTAX CORPORATION
    • Isamu Hirai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Photographing Apparatus
    • Publication number 20080062276
    • Publication date Mar 13, 2008
    • PENTAX CORPORATION
    • Isamu HIRAI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Photographing Apparatus
    • Publication number 20080062277
    • Publication date Mar 13, 2008
    • PENTAX CORPORATION
    • Isamu HIRAI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    IMAGE PICKUP DEVICE
    • Publication number 20060278904
    • Publication date Dec 14, 2006
    • PENTAX CORPORATION
    • Isamu HIRAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Photometric apparatus
    • Publication number 20060158530
    • Publication date Jul 20, 2006
    • PENTAX CORPORATION
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image surface illuminance varying apparatus, exposure correcting ap...
    • Publication number 20060158546
    • Publication date Jul 20, 2006
    • PENTAX CORPORATION
    • Isamu Hirai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Viewfinder
    • Publication number 20060153557
    • Publication date Jul 13, 2006
    • PENTAX CORPORATION
    • Isamu Hirai
    • G02 - OPTICS
  • Information Patent Application

    Flash control system
    • Publication number 20030068165
    • Publication date Apr 10, 2003
    • PENTAX CORPORATION
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    AF auxiliary light projector for AF camera
    • Publication number 20020186971
    • Publication date Dec 12, 2002
    • Masayuki Murata
    • G02 - OPTICS
  • Information Patent Application

    Photometry device
    • Publication number 20020102104
    • Publication date Aug 1, 2002
    • ASAHI KOGAKU KOGYO KASBUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20020102105
    • Publication date Aug 1, 2002
    • ASAHI KOGAKU KOGYO KABUSHUKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20010038753
    • Publication date Nov 8, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20010016117
    • Publication date Aug 23, 2001
    • ASSHI KOGAKU DOGYO KABUSHIKI KAISHA OF Tokyo, JAPAN
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20010010762
    • Publication date Aug 2, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20010003558
    • Publication date Jun 14, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device
    • Publication number 20010003557
    • Publication date Jun 14, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY