Toshio Niihara

Person

Sayama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multibeam optical disk record and reproduction apparatus and method
- Patent number 6,493,297
- Issue date Dec 10, 2002
- Hitachi, Ltd.
- Soichi Isono
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium
- Patent number 6,200,673
- Issue date Mar 13, 2001
- Hitachi, Ltd.
- Harukazu Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium with clock information therein
- Patent number 5,959,943
- Issue date Sep 28, 1999
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium having dielectric layers with diff...
- Patent number 5,914,198
- Issue date Jun 22, 1999
- Hitachi, Ltd.
- Harukazu Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording apparatus and method for modulated magneto-op...
- Patent number 5,886,958
- Issue date Mar 23, 1999
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto optical recording medium apparatus and method utilizing lig...
- Patent number 5,726,955
- Issue date Mar 10, 1998
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical disk
- Patent number 5,654,058
- Issue date Aug 5, 1997
- Hitachi, Ltd.
- Fumiyoshi Kirino
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical data recording apparatus using a sample-servo syste...
- Patent number 5,579,292
- Issue date Nov 26, 1996
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical data recording system continuously irradiating opti...
- Patent number 5,473,581
- Issue date Dec 5, 1995
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording media and mangeto-optical device using th...
- Patent number 5,462,811
- Issue date Oct 31, 1995
- Hitachi, Ltd.
- Harukazu Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording media and magneto-optical recording devic...
- Patent number 5,434,844
- Issue date Jul 18, 1995
- Hitachi, Ltd.
- Harukazu Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of an apparatus for magneto-optically recording information...
- Patent number 5,321,672
- Issue date Jun 14, 1994
- Hitachi, Ltd.
- Harukazu Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording and reproducing method, magneto-optical m...
- Patent number 5,270,987
- Issue date Dec 14, 1993
- Hitachi, Ltd.
- Toshimitsu Kaku
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording media and overwrite recording method usin...
- Patent number 5,263,015
- Issue date Nov 16, 1993
- Hitachi, Ltd.
- Toshio Niihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical disk and process for manufacturing the same
- Patent number 5,179,546
- Issue date Jan 12, 1993
- Hitachi, Ltd.
- Yumiko Anzai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical data recording system
- Patent number 5,170,383
- Issue date Dec 8, 1992
- Hitachi, Ltd.
- Seiji Yonezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium
- Patent number 4,923,765
- Issue date May 8, 1990
- Hitachi, Ltd.
- Shinji Takayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical recording disk
- Patent number 4,889,757
- Issue date Dec 26, 1989
- Hitachi, Ltd.
- Shinkichi Horigome
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording material
- Patent number 4,880,694
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Shinji Takayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and fabrication method ther...
- Patent number 4,743,491
- Issue date May 10, 1988
- Hitachi, Ltd.
- Seiichi Asada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording system utilizing a leakage magnetic field...
- Patent number 4,672,594
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Tsuyoshi Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optic information storage system utilizing a self-coupled l...
- Patent number 4,571,650
- Issue date Feb 18, 1986
- Hitachi, Ltd.
- Masahiro Ojima
- G11 - INFORMATION STORAGE

Toshio Niihara

Person

Patents Grantslast 30 patents

Multibeam optical disk record and reproduction apparatus and method

Magneto-optical recording medium

Information recording medium with clock information therein

Magneto-optical recording medium having dielectric layers with diff...

Information recording apparatus and method for modulated magneto-op...

Magneto optical recording medium apparatus and method utilizing lig...

Magneto-optical disk

Magneto-optical data recording apparatus using a sample-servo syste...

Magneto-optical data recording system continuously irradiating opti...

Magneto-optical recording media and mangeto-optical device using th...

Magneto-optical recording media and magneto-optical recording devic...

Method of an apparatus for magneto-optically recording information...

Magneto-optical recording and reproducing method, magneto-optical m...

Magneto-optical recording media and overwrite recording method usin...

Magneto-optical disk and process for manufacturing the same

Magneto-optical data recording system

Magneto-optical recording medium

Optical recording disk

Magneto-optical recording material

Perpendicular magnetic recording medium and fabrication method ther...

Magneto-optical recording system utilizing a leakage magnetic field...

Magneto-optic information storage system utilizing a self-coupled l...