Yasuo Nakata

Person

Takaichi-gun, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical pickup device recording and/or reproducing information on a...
- Patent number 7,990,834
- Issue date Aug 2, 2011
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Pickup for magneto-optical recording medium
- Patent number 7,397,752
- Issue date Jul 8, 2008
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 6,614,720
- Issue date Sep 2, 2003
- Sharp Kabushiki Kaisha
- Nobuo Ogata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording/reproducing apparatus having focus er...
- Patent number 6,407,968
- Issue date Jun 18, 2002
- Sharp Kabushiki Kaisha
- Yasuo Nakata
- G11 - INFORMATION STORAGE
Information Patent Grant
Reproducing light quantity control method for optical memory device...
- Patent number 6,392,970
- Issue date May 21, 2002
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Hologram laser unit and optical pickup device including the same
- Patent number 6,388,977
- Issue date May 14, 2002
- Sharp Kabushiki, Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording/reproducing apparatus having focus se...
- Patent number 5,999,502
- Issue date Dec 7, 1999
- Sharp Kabushiki Kaisha
- Yasuo Nakata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk including wobbled guiding groove composed of pits, opt...
- Patent number 5,940,364
- Issue date Aug 17, 1999
- Sharp Kabushiki Kaisha
- Nobuo Ogata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk device for reproducing address information from wobble...
- Patent number 5,696,742
- Issue date Dec 9, 1997
- Sharp Kabushiki Kaisha
- Nobuo Ogata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup having two objective lenses
- Patent number 5,673,247
- Issue date Sep 30, 1997
- Sharp Kabushiki Kaisha
- Yoshihiro Sekimoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording-reproduction method
- Patent number 5,659,528
- Issue date Aug 19, 1997
- Sharp Kabushiki Kaisha
- Kunio Kojima
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device with diffraction device
- Patent number RE35332
- Issue date Sep 24, 1996
- Sharp Kabushiki Kaisha
- Toshiya Nagahama
- 250 - Radiant energy
Information Patent Grant
Polarization detector
- Patent number 5,473,470
- Issue date Dec 5, 1995
- Sharp Kabushiki Kaisha
- Takahiro Miyake
- G02 - OPTICS
Information Patent Grant
Display apparatus having a plurality of display devices
- Patent number 5,465,315
- Issue date Nov 7, 1995
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Objective lens drive device with support system
- Patent number 5,446,721
- Issue date Aug 29, 1995
- Sharp Kabushiki Kaisha
- Yoshihiro Sekimoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Polarization diffraction element and polarization detector employin...
- Patent number 5,257,131
- Issue date Oct 26, 1993
- Sharp Kabushiki Kaisha
- Yoshio Yoshida
- G02 - OPTICS
Information Patent Grant
Optical head device
- Patent number 5,253,237
- Issue date Oct 12, 1993
- Sharp Kabushiki Kaisha
- Takahiro Miyake
- G11 - INFORMATION STORAGE
Information Patent Grant
Liquid crystal display apparatus
- Patent number 5,251,280
- Issue date Oct 5, 1993
- Sharp Kabushiki Kaisha
- Atsushi Asada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Optical pickup apparatus utilizing a diffraction device
- Patent number 5,128,914
- Issue date Jul 7, 1992
- Sharp Kabushiki Kaisha
- Yukio Kurata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical element and optical pickup device comprising it
- Patent number 5,085,496
- Issue date Feb 4, 1992
- Sharp Kabushiki Kaisha
- Yoshio Yoshida
- G02 - OPTICS
Information Patent Grant
Optical pickup device with diffraction device
- Patent number 5,049,732
- Issue date Sep 17, 1991
- Sharp Kabushiki Kaisha
- Toshiya Nagahama
- G11 - INFORMATION STORAGE
Information Patent Grant
Pick-up device for use in an optical information recording system u...
- Patent number 5,050,155
- Issue date Sep 17, 1991
- Sharp Kabushiki Kaisha
- Yukio Kurata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording and reproducing apparatus
- Patent number 4,985,880
- Issue date Jan 15, 1991
- Sharp Kabushiki Kaisha
- Yoshio Yoshida
- G11 - INFORMATION STORAGE
Information Patent Grant
Pick-up device for use in an optical information recording system
- Patent number 4,849,825
- Issue date Jul 18, 1989
- Sharp Kabushiki Kaisha
- Yukio Kurata
- G11 - INFORMATION STORAGE
Information Patent Grant
Focusing error detector and optical data detecting device incorpora...
- Patent number 4,812,638
- Issue date Mar 14, 1989
- Sharp Kabushiki Kaisha
- Nobuo Ogata
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL PICKUP DEVICE
- Publication number 20080117789
- Publication date May 22, 2008
- SHARP KABUSHIKI KAISHA
- Taizoh Yokota
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup device recording and/or reproducing information on a...
- Publication number 20070053270
- Publication date Mar 8, 2007
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup
- Publication number 20040228257
- Publication date Nov 18, 2004
- Kohji Minami
- G11 - INFORMATION STORAGE
Information Patent Application
Pickup for magneto-optical recording medium
- Publication number 20040228256
- Publication date Nov 18, 2004
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE

Yasuo Nakata

Person

Patents Grantslast 30 patents

Optical pickup device recording and/or reproducing information on a...

Pickup for magneto-optical recording medium

Optical pickup device

Optical information recording/reproducing apparatus having focus er...

Reproducing light quantity control method for optical memory device...

Hologram laser unit and optical pickup device including the same

Optical information recording/reproducing apparatus having focus se...

Optical disk including wobbled guiding groove composed of pits, opt...

Optical disk device for reproducing address information from wobble...

Optical pickup having two objective lenses

Information recording-reproduction method

Optical pickup device with diffraction device

Polarization detector

Display apparatus having a plurality of display devices

Objective lens drive device with support system

Polarization diffraction element and polarization detector employin...

Optical head device

Liquid crystal display apparatus

Optical pickup apparatus utilizing a diffraction device

Optical element and optical pickup device comprising it

Optical pickup device with diffraction device

Pick-up device for use in an optical information recording system u...

Optical information recording and reproducing apparatus

Pick-up device for use in an optical information recording system

Focusing error detector and optical data detecting device incorpora...

Patents Applicationslast 30 patents

OPTICAL PICKUP DEVICE

Optical pickup device recording and/or reproducing information on a...

Optical pickup

Pickup for magneto-optical recording medium