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Daisuke Imafuku
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Fujisawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Screen, fresnel lens sheet used for the same, and image display app...
Patent number
7,697,202
Issue date
Apr 13, 2010
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image display device and Fresnel lens sheet used therefor
Patent number
7,675,679
Issue date
Mar 9, 2010
Hitachi, Ltd.
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Grant
Projection type image display device
Patent number
7,589,904
Issue date
Sep 15, 2009
Hitachi, Ltd.
Daisuke Imafuku
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical projector and image display apparatus using the same
Patent number
7,581,838
Issue date
Sep 1, 2009
Hitachi, Ltd.
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Grant
Image display apparatus, as well as, Fresnel lens sheet and screen...
Patent number
7,551,352
Issue date
Jun 23, 2009
Hitachi, Ltd.
Tetsu Ohishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image display, Fresnel lens and screen
Patent number
7,529,023
Issue date
May 5, 2009
Hitachi, Ltd.
Daisuke Imafuku
G02 - OPTICS
Information
Patent Grant
Image display apparatus, and transmissive screen and reflecting mir...
Patent number
7,460,301
Issue date
Dec 2, 2008
Hitachi, Ltd.
Daisuke Imafuku
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Screen, a fresnel lens sheet used for the screen, and an image disp...
Patent number
7,440,186
Issue date
Oct 21, 2008
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Screen, fresnel lens sheet used therefor, and image display apparat...
Patent number
7,436,593
Issue date
Oct 14, 2008
Hitachi, Ltd.
Tetsu Ohishi
G02 - OPTICS
Information
Patent Grant
Projection type image display apparatus
Patent number
7,433,121
Issue date
Oct 7, 2008
Hitachi, Ltd.
Daisuke Imafuku
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Screen, Fresnel lens sheet used for the same, and image display app...
Patent number
7,403,335
Issue date
Jul 22, 2008
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Screen, Fresnel lens sheet used for the same, and image display app...
Patent number
7,362,503
Issue date
Apr 22, 2008
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical projector and image display apparatus using the same
Patent number
7,261,421
Issue date
Aug 28, 2007
Hitachi, Ltd.
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Grant
Image display device, rear projection type screen used in image dis...
Patent number
7,245,429
Issue date
Jul 17, 2007
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image display device, rear projection type screen used in image dis...
Patent number
7,095,558
Issue date
Aug 22, 2006
Hitachi, Ltd.
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projection lens apparatus and rear projection type image display ap...
Patent number
6,768,594
Issue date
Jul 27, 2004
Hitachi, Ltd.
Daisuke Imafuku
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Screen, Fresnel Lens Sheet Used For The Same, And Image Display App...
Publication number
20080204868
Publication date
Aug 28, 2008
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROJECTION TYPE IMAGE DISPLAY DEVICE
Publication number
20070285780
Publication date
Dec 13, 2007
DAISUKE IMAFUKU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Projector and Image Display Apparatus Using the Same
Publication number
20070273969
Publication date
Nov 29, 2007
Hitachi, Ltd
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Application
Projection type image display apparatus
Publication number
20070229948
Publication date
Oct 4, 2007
Hitachi, Ltd
Daisuke Imafuku
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image display device and Fresnel lens sheet used therefor
Publication number
20070146879
Publication date
Jun 28, 2007
Hitachi, Ltd
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Application
Image display, Fresnel lens and screen
Publication number
20070146877
Publication date
Jun 28, 2007
Hitachi, Ltd
Daisuke Imafuku
G02 - OPTICS
Information
Patent Application
Image display device
Publication number
20070052341
Publication date
Mar 8, 2007
Daisuke Imafuku
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Projection screen and image display apparatus
Publication number
20070002281
Publication date
Jan 4, 2007
Hitachi, Ltd
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image display device, rear projection type screen used in image dis...
Publication number
20060256433
Publication date
Nov 16, 2006
Hitachi, Ltd
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Screen, a fresnel lens sheet used for the screen, and an image disp...
Publication number
20060132913
Publication date
Jun 22, 2006
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image display apparatus, and transmissive screen and reflecting mir...
Publication number
20060092510
Publication date
May 4, 2006
Daisuke Imafuku
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Image display apparatus, as well as, Fresnel lens sheet and screen...
Publication number
20060092511
Publication date
May 4, 2006
Hitachi, Ltd
Tetsu Ohishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Screen, fresnel lens sheet used therefor, and image display apparat...
Publication number
20060001966
Publication date
Jan 5, 2006
Tetsu Ohishi
G02 - OPTICS
Information
Patent Application
Screen, Fresnel lens sheet used for the same, and image display app...
Publication number
20050270643
Publication date
Dec 8, 2005
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Screen, fresnel lens sheet used for the same, and image display app...
Publication number
20050174636
Publication date
Aug 11, 2005
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Optical projector and image display apparatus using the same
Publication number
20050134813
Publication date
Jun 23, 2005
Hitachi, Ltd
Hiroki Yoshikawa
G02 - OPTICS
Information
Patent Application
Image display device, rear projection type screen used in image dis...
Publication number
20050046939
Publication date
Mar 3, 2005
Hitachi, Ltd
Hiroki Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Projection lens apparatus and rear projection type image display ap...
Publication number
20030095238
Publication date
May 22, 2003
Hitachi, Ltd
Daisuke Imafuku
G02 - OPTICS