Kunikazu Ohnishi

Person

Yokosuka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light source unit and projection display system using same
- Patent number 9,551,917
- Issue date Jan 24, 2017
- HITACHI CONSUMER ELECTRONICS CO., LTD.
- Mitsuru Nagasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical beam scanning device and image display device using the same
- Patent number 8,891,147
- Issue date Nov 18, 2014
- Hitachi-LG Data Storage, Inc.
- Kunikazu Ohnishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Scan type image display device
- Patent number 8,693,075
- Issue date Apr 8, 2014
- Hitachi Media Electronics Co., Ltd.
- Takeshi Nakao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical information processing device and tracking control method t...
- Patent number 8,644,120
- Issue date Feb 4, 2014
- Hitachi Media Electronics Co., Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disc unit
- Patent number 8,331,207
- Issue date Dec 11, 2012
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffraction grating, optical pickup and optical disc device
- Patent number 8,149,678
- Issue date Apr 3, 2012
- Hitachi Media Electronics Co., Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 8,081,550
- Issue date Dec 20, 2011
- Hitachi Media Electronics Co., Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording apparatus
- Patent number 8,072,850
- Issue date Dec 6, 2011
- Hitachi Media Electronics Co., Ltd.
- Fumio Isshiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disc apparatus
- Patent number 7,965,594
- Issue date Jun 21, 2011
- Hitachi Media Electronics Co., Ltd.
- Toshiteru Nakamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Photodetector, diffraction grating, optical pickup and optical disc...
- Patent number 7,936,658
- Issue date May 3, 2011
- Hitachi Media Electronics Co., Ltd.
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,911,915
- Issue date Mar 22, 2011
- Hitachi Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,724,626
- Issue date May 25, 2010
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information reproducing apparatus using...
- Patent number 7,715,298
- Issue date May 11, 2010
- Hitachi Media Electronics Co., Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Photodetector, diffraction grating, optical pickup and optical disc...
- Patent number 7,706,220
- Issue date Apr 27, 2010
- Hitachi Media Electronics Co., Ltd.
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,697,393
- Issue date Apr 13, 2010
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,697,394
- Issue date Apr 13, 2010
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disc drive
- Patent number 7,656,771
- Issue date Feb 2, 2010
- Hitachi Media Electronics Co., Ltd.
- Kenichi Shimada
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,590,043
- Issue date Sep 15, 2009
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording apparatus
- Patent number 7,480,216
- Issue date Jan 20, 2009
- Hitachi Media Electronics Co., Ltd.
- Fumio Isshiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical information recording apparatus using th...
- Patent number 7,327,661
- Issue date Feb 5, 2008
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head
- Patent number 6,934,228
- Issue date Aug 23, 2005
- Hitachi, Ltd.
- Takeshi Shimano
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector, optical pickup and optical information reproducin...
- Patent number 6,778,475
- Issue date Aug 17, 2004
- Hitachi, Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Information reproducing method which reproduces plural components o...
- Patent number 6,728,173
- Issue date Apr 27, 2004
- Hitachi, Ltd.
- Takeshi Shimano
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector having three light receiving areas
- Patent number 6,721,242
- Issue date Apr 13, 2004
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector, optical pickup and optical information reproducin...
- Patent number 6,567,355
- Issue date May 20, 2003
- Hitachi, Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector, signal processing circuit and optical information...
- Patent number 6,507,009
- Issue date Jan 14, 2003
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head including electrical circuit which produces focus erro...
- Patent number 6,400,664
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Takeshi Shimano
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup for optical disk apparatus
- Patent number 6,125,087
- Issue date Sep 26, 2000
- Hitachi, Ltd.
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking method for optical disk apparatus using diffraction light
- Patent number 5,930,220
- Issue date Jul 27, 1999
- Hitachi, Ltd.
- Takeshi Shimano
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk drive
- Patent number 5,751,680
- Issue date May 12, 1998
- Hitachi, Ltd.
- Toshiaki Ishibashi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SCANNING APPARATUS AND OPTICAL SCANNING IMAGE PROJECTION AP...
- Publication number 20140036242
- Publication date Feb 6, 2014
- Hitachi Media Electronics Co., Ltd.
- Kunikazu OHNISHI
- G02 - OPTICS
Information Patent Application
SCANNING PROJECTION APPARATUS AND SCANNING IMAGE DISPLAY
- Publication number 20130076800
- Publication date Mar 28, 2013
- Michio HATAGI
- G02 - OPTICS
Information Patent Application
SCAN-TYPE IMAGE DISPLAY DEVICE AND SCAN-TYPE PROJECTION DEVICE
- Publication number 20130003022
- Publication date Jan 3, 2013
- Teppei Tanaka
- G02 - OPTICS
Information Patent Application
OPTICAL BEAM SCANNING DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME
- Publication number 20120300276
- Publication date Nov 29, 2012
- Hitachi Media Electronics Co., Ltd.
- Kunikazu OHNISHI
- G02 - OPTICS
Information Patent Application
OPTICAL INFORMATION PROCESSING DEVICE AND TRACKING CONTROL METHOD T...
- Publication number 20120300602
- Publication date Nov 29, 2012
- Hitachi Media Electronics Co., Ltd.
- Kunikazu OHNISHI
- G11 - INFORMATION STORAGE
Information Patent Application
SCANNING TYPE PROJECTOR
- Publication number 20120293775
- Publication date Nov 22, 2012
- Hiromi KITA
- G02 - OPTICS
Information Patent Application
SCAN TYPE IMAGE DISPLAY DEVICE
- Publication number 20120275002
- Publication date Nov 1, 2012
- Hitachi Media Electronics Co., Ltd.
- Takeshi NAKAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL INFORMATION MEDIUM, OPTICAL INFORMATION RECORDING/REPRODUCI...
- Publication number 20120230172
- Publication date Sep 13, 2012
- Takakiyo YASUKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL INFORMATION DEVICE AND INTERLAYER MOVEMENT METHOD IN OPTICA...
- Publication number 20120127846
- Publication date May 24, 2012
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP
- Publication number 20120051204
- Publication date Mar 1, 2012
- Hitachi Media Electronics Co., Ltd.
- Kunikazu OHNISHI
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP AND OPTICAL DISC APPARATUS
- Publication number 20100322047
- Publication date Dec 23, 2010
- Toshiteru Nakamura
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP DEVICE
- Publication number 20100226229
- Publication date Sep 9, 2010
- Kunikazu OHNISHI
- G11 - INFORMATION STORAGE
Information Patent Application
PHOTODETECTOR, DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC...
- Publication number 20100148045
- Publication date Jun 17, 2010
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE
- Publication number 20100124161
- Publication date May 20, 2010
- Hitachi Media Electronics Co., Ltd.
- Hiromitsu MORI
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE
- Publication number 20100124153
- Publication date May 20, 2010
- Hitachi Media Electronics Co., Ltd.
- Hiromitsu MORI
- G11 - INFORMATION STORAGE
Information Patent Application
DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC DEVICE
- Publication number 20100034071
- Publication date Feb 11, 2010
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL INFORMATION RECORDING APPARATUS
- Publication number 20090129217
- Publication date May 21, 2009
- Fumio Isshiki
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical disc unit
- Publication number 20080219119
- Publication date Sep 11, 2008
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information recording apparatus using th...
- Publication number 20080031119
- Publication date Feb 7, 2008
- Hitachi, Ltd
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information recording apparatus using th...
- Publication number 20080031105
- Publication date Feb 7, 2008
- Hitachi, Ltd
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information recording apparatus using th...
- Publication number 20080030857
- Publication date Feb 7, 2008
- Hitachi, Ltd
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information recording apparatus using th...
- Publication number 20080031100
- Publication date Feb 7, 2008
- Hitachi, Ltd
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information recording apparatus using th...
- Publication number 20080031104
- Publication date Feb 7, 2008
- Hitachi, Ltd
- Kunikazu Ohnishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical Pickup and Optical Disc Apparatus
- Publication number 20070242575
- Publication date Oct 18, 2007
- Toshiteru Nakamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical disc drive
- Publication number 20070223349
- Publication date Sep 27, 2007
- Hitachi Media Electronics Co., Ltd.
- Kenichi Shimada
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information reproducing apparatus using...
- Publication number 20070146892
- Publication date Jun 28, 2007
- Kunikazu Ohnishi
- G02 - OPTICS
Information Patent Application
Photodetector, diffraction grating, optical pickup and optical disc...
- Publication number 20070019530
- Publication date Jan 25, 2007
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical information reproducing device
- Publication number 20060193217
- Publication date Aug 31, 2006
- Hiromitsu Mori
- G11 - INFORMATION STORAGE
Information Patent Application
Diffraction grating, optical pickup device, and optical disk apparatus
- Publication number 20060193219
- Publication date Aug 31, 2006
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical information recording apparatus
- Publication number 20050063259
- Publication date Mar 24, 2005
- Fumio Isshiki
- G11 - INFORMATION STORAGE

Kunikazu Ohnishi

Person

Patents Grantslast 30 patents

Light source unit and projection display system using same

Optical beam scanning device and image display device using the same

Scan type image display device

Optical information processing device and tracking control method t...

Optical pickup and optical disc unit

Diffraction grating, optical pickup and optical disc device

Optical pickup device

Optical information recording apparatus

Optical pickup and optical disc apparatus

Photodetector, diffraction grating, optical pickup and optical disc...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information reproducing apparatus using...

Photodetector, diffraction grating, optical pickup and optical disc...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical disc drive

Optical pickup and optical information recording apparatus using th...

Optical information recording apparatus

Optical pickup and optical information recording apparatus using th...

Optical head

Optical detector, optical pickup and optical information reproducin...

Information reproducing method which reproduces plural components o...

Optical detector having three light receiving areas

Optical detector, optical pickup and optical information reproducin...

Optical detector, signal processing circuit and optical information...

Optical head including electrical circuit which produces focus erro...

Optical pickup for optical disk apparatus

Tracking method for optical disk apparatus using diffraction light

Optical disk drive

Patents Applicationslast 30 patents

OPTICAL SCANNING APPARATUS AND OPTICAL SCANNING IMAGE PROJECTION AP...

SCANNING PROJECTION APPARATUS AND SCANNING IMAGE DISPLAY

SCAN-TYPE IMAGE DISPLAY DEVICE AND SCAN-TYPE PROJECTION DEVICE

OPTICAL BEAM SCANNING DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME

OPTICAL INFORMATION PROCESSING DEVICE AND TRACKING CONTROL METHOD T...

SCANNING TYPE PROJECTOR

SCAN TYPE IMAGE DISPLAY DEVICE

OPTICAL INFORMATION MEDIUM, OPTICAL INFORMATION RECORDING/REPRODUCI...

OPTICAL INFORMATION DEVICE AND INTERLAYER MOVEMENT METHOD IN OPTICA...

OPTICAL PICKUP

OPTICAL PICKUP AND OPTICAL DISC APPARATUS

OPTICAL PICKUP DEVICE

PHOTODETECTOR, DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC...

OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE

OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE

DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC DEVICE

OPTICAL INFORMATION RECORDING APPARATUS

Optical pickup and optical disc unit

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical pickup and optical information recording apparatus using th...

Optical Pickup and Optical Disc Apparatus

Optical pickup and optical disc drive

Optical pickup and optical information reproducing apparatus using...

Photodetector, diffraction grating, optical pickup and optical disc...

Optical pickup and optical information reproducing device

Diffraction grating, optical pickup device, and optical disk apparatus

Optical information recording apparatus