Tetsu Ohishi

Person

Hiratsuka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Projecting optical unit and projecting type image display apparatus...
- Patent number 8,169,708
- Issue date May 1, 2012
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G02 - OPTICS
Information Patent Grant
Projecting optical unit and projecting type image display apparatus...
- Patent number 7,961,400
- Issue date Jun 14, 2011
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G02 - OPTICS
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 display, projection optical system and transmission lens...
- Patent number 7,670,007
- Issue date Mar 2, 2010
- Hitachi, Ltd.
- Takanori Hisada
- G02 - OPTICS
Information Patent Grant
Projecting optical unit and projecting type image display apparatus...
- Patent number 7,586,687
- Issue date Sep 8, 2009
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G02 - OPTICS
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
Projection type image display
- Patent number 7,535,648
- Issue date May 19, 2009
- Hitachi, Ltd.
- Hiroki Yoshikawa
- 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
Projection optical unit and projection type video display device us...
- Patent number 7,467,872
- Issue date Dec 23, 2008
- Hitachi, Ltd.
- Takanori Hisada
- 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
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
Field emission display apparatus with improved white balance
- Patent number 7,358,934
- Issue date Apr 15, 2008
- Hitachi, Ltd.
- Toshimitsu Watanabe
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Display device
- Patent number 7,298,080
- Issue date Nov 20, 2007
- Hitachi, Ltd.
- Yoshie Kodera
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Display device
- Patent number 7,271,783
- Issue date Sep 18, 2007
- Hitachi, Ltd.
- Yoshie Kodera
- H01 - BASIC ELECTRIC ELEMENTS
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
Display apparatus
- Patent number 7,176,876
- Issue date Feb 13, 2007
- Hitachi, Ltd.
- Nobuaki Kabuto
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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
Flat panel display device
- Patent number 7,095,169
- Issue date Aug 22, 2006
- Hitachi, Ltd.
- Tetsu Ohishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Projection-type video display
- Patent number 6,910,775
- Issue date Jun 28, 2005
- Hitachi, Ltd.
- Taro Imahase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Projection type image display apparatus
- Patent number 6,798,580
- Issue date Sep 28, 2004
- Hitachi, Ltd.
- Tetsu Ohishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image forming unit, enlarging unit, optical parts, and image displa...
- Patent number 6,462,794
- Issue date Oct 8, 2002
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G02 - OPTICS
Information Patent Grant
Projector, projecting system, system for sensation and method of ma...
- Patent number 6,201,516
- Issue date Mar 13, 2001
- Hitachi, Ltd.
- Hideo Tanide
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Multi-display apparatus
- Patent number 5,926,153
- Issue date Jul 20, 1999
- Hitachi, Ltd.
- Tetsu Ohishi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Sensory integration system and image display device and concave mir...
- Patent number 5,833,340
- Issue date Nov 10, 1998
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
PROJECTING OPTICAL UNIT AND PROJECTING TYPE IMAGE DISPLAY APPARATUS...
- Publication number 20110205499
- Publication date Aug 25, 2011
- Hitachi, Ltd
- Hiroki YOSHIKAWA
- G02 - OPTICS
Information Patent Application
PROJECTING OPTICAL UNIT AND PROJECTING TYPE IMAGE DISPLAY APPARATUS...
- Publication number 20090290133
- Publication date Nov 26, 2009
- Hitachi, Ltd
- Hiroki YOSHIKAWA
- G02 - OPTICS
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
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
Display Device
- Publication number 20070216670
- Publication date Sep 20, 2007
- Yasuharu Yatsu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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
Projection display, projection optical system and transmission lens...
- Publication number 20070139623
- Publication date Jun 21, 2007
- Takanori Hisada
- G02 - OPTICS
Information Patent Application
Projection type image display
- Publication number 20070103604
- Publication date May 10, 2007
- Hiroki Yoshikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Flat type image display device and its manufacture method
- Publication number 20070069629
- Publication date Mar 29, 2007
- Hitachi, Ltd
- Tetsu Ohishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Image display device
- Publication number 20070069630
- Publication date Mar 29, 2007
- Yuuichi Kijima
- H01 - BASIC ELECTRIC ELEMENTS
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
Projection optical unit and projection type video display device us...
- Publication number 20060227299
- Publication date Oct 12, 2006
- Takanori Hisada
- G02 - OPTICS
Information Patent Application
Projecting optical unit and projecting type image display apparatus...
- Publication number 20060227432
- Publication date Oct 12, 2006
- Hiroki Yoshikawa
- G02 - OPTICS
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
Flat image display device
- Publication number 20060077626
- Publication date Apr 13, 2006
- Nobuo Masuoka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Image display device and manufacturing method thereof
- Publication number 20060061256
- Publication date Mar 23, 2006
- Noriyuki Oroku
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Display apparatus
- Publication number 20060050039
- Publication date Mar 9, 2006
- Hitachi, Ltd
- Toshimitsu Watanabe
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Flat-panel display apparatus
- Publication number 20060038480
- Publication date Feb 23, 2006
- Tetsu Ohishi
- H01 - BASIC ELECTRIC ELEMENTS
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
Flat panel display apparatus
- Publication number 20050189866
- Publication date Sep 1, 2005
- Hitachi Ltd.
- Yoshie Kodera
- H01 - BASIC ELECTRIC ELEMENTS
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
Display device
- Publication number 20050093421
- Publication date May 5, 2005
- Yoshie Kodera
- H01 - BASIC ELECTRIC ELEMENTS
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
Display device
- Publication number 20040233137
- Publication date Nov 25, 2004
- Hitachi, Ltd
- Yoshie Kodera
- H01 - BASIC ELECTRIC ELEMENTS

Tetsu Ohishi

Person

Patents Grantslast 30 patents

Projecting optical unit and projecting type image display apparatus...

Projecting optical unit and projecting type image display apparatus...

Screen, fresnel lens sheet used for the same, and image display app...

Image display device and Fresnel lens sheet used therefor

Projection display, projection optical system and transmission lens...

Projecting optical unit and projecting type image display apparatus...

Optical projector and image display apparatus using the same

Image display apparatus, as well as, Fresnel lens sheet and screen...

Projection type image display

Image display, Fresnel lens and screen

Projection optical unit and projection type video display device us...

Image display apparatus, and transmissive screen and reflecting mir...

Screen, a fresnel lens sheet used for the screen, and an image disp...

Screen, fresnel lens sheet used therefor, and image display apparat...

Screen, Fresnel lens sheet used for the same, and image display app...

Screen, Fresnel lens sheet used for the same, and image display app...

Field emission display apparatus with improved white balance

Display device

Display device

Optical projector and image display apparatus using the same

Image display device, rear projection type screen used in image dis...

Display apparatus

Image display device, rear projection type screen used in image dis...

Flat panel display device

Projection-type video display

Projection type image display apparatus

Image forming unit, enlarging unit, optical parts, and image displa...

Projector, projecting system, system for sensation and method of ma...

Multi-display apparatus

Sensory integration system and image display device and concave mir...

Patents Applicationslast 30 patents

PROJECTING OPTICAL UNIT AND PROJECTING TYPE IMAGE DISPLAY APPARATUS...

PROJECTING OPTICAL UNIT AND PROJECTING TYPE IMAGE DISPLAY APPARATUS...

Screen, Fresnel Lens Sheet Used For The Same, And Image Display App...

Optical Projector and Image Display Apparatus Using the Same

Display Device

Image display, Fresnel lens and screen

Projection display, projection optical system and transmission lens...

Projection type image display

Flat type image display device and its manufacture method

Image display device

Image display device

Projection screen and image display apparatus

Image display device, rear projection type screen used in image dis...

Projection optical unit and projection type video display device us...

Projecting optical unit and projecting type image display apparatus...

Screen, a fresnel lens sheet used for the screen, and an image disp...

Image display apparatus, and transmissive screen and reflecting mir...

Image display apparatus, as well as, Fresnel lens sheet and screen...

Flat image display device

Image display device and manufacturing method thereof

Display apparatus

Flat-panel display apparatus

Screen, fresnel lens sheet used therefor, and image display apparat...

Screen, Fresnel lens sheet used for the same, and image display app...

Flat panel display apparatus

Screen, fresnel lens sheet used for the same, and image display app...

Optical projector and image display apparatus using the same

Display device

Image display device, rear projection type screen used in image dis...

Display device