Hideki Akasaka

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Reproducing apparatus for magneto-optical recording device
- Patent number 5,680,373
- Issue date Oct 21, 1997
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetooptical recording method and apparatus using multi-layered m...
- Patent number 5,539,709
- Issue date Jul 23, 1996
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Overwrite capable magnetooptial recording apparatus
- Patent number 5,475,657
- Issue date Dec 12, 1995
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Multilayered magnetooptical recording medium
- Patent number 5,458,987
- Issue date Oct 17, 1995
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical reproducing method
- Patent number 5,440,531
- Issue date Aug 8, 1995
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Over-write capable magnetooptical recording medium having C/N ratio...
- Patent number 5,389,455
- Issue date Feb 14, 1995
- Nikon Corporation
- Jun Saito
- G11 - INFORMATION STORAGE
Information Patent Grant
Over write capable magnetooptical recording method, and magnetoopti...
- Patent number 5,367,507
- Issue date Nov 22, 1994
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical integrated device for magneto-optical reproducing head
- Patent number 5,293,291
- Issue date Mar 8, 1994
- Nikon Corporation
- Hiroshi Ohki
- G11 - INFORMATION STORAGE
Information Patent Grant
Over write capable magnetooptical recording method, and magnetoopti...
- Patent number 5,239,524
- Issue date Aug 24, 1993
- Nikon Corporation
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording magnetooptical recording medium
- Patent number 5,204,193
- Issue date Apr 20, 1993
- Nippon Kogaku K.K.
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical waveguide device for polarization rotation
- Patent number 5,140,654
- Issue date Aug 18, 1992
- Nikon Corporation
- Hideki Akasaka
- G02 - OPTICS
Information Patent Grant
Over write capable magnetooptical recording method using two beams,...
- Patent number 5,014,252
- Issue date May 7, 1991
- Nikon Corporation
- Hideki Akasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Over write capable magnetooptical recording method using two beams,...
- Patent number 4,855,975
- Issue date Aug 8, 1989
- Nikon Corporation
- Hideki Akasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Process and apparatus for simultaneous erasure and recording in mag...
- Patent number 4,853,912
- Issue date Aug 1, 1989
- Nikon Corporation
- Hideki Akasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Double-layered magnetooptical recording medium
- Patent number 4,753,853
- Issue date Jun 28, 1988
- Nippon Kogaku K.K.
- Masatoshi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
All solid type electrochromic display element
- Patent number 4,433,901
- Issue date Feb 28, 1984
- Nippon Kogaku K.K.
- Yosuke Takahashi
- G02 - OPTICS
Information Patent Grant
All solid state electrochromic device
- Patent number 4,350,414
- Issue date Sep 21, 1982
- Nippon Kogaku K.K.
- Yosuke Takahashi
- G02 - OPTICS
Information Patent Grant
Electrochromic element
- Patent number 4,135,790
- Issue date Jan 23, 1979
- Nippon Kogaku K.K.
- Youske Takahashi
- G02 - OPTICS

Hideki Akasaka

Person

Patents Grantslast 30 patents

Reproducing apparatus for magneto-optical recording device

Magnetooptical recording method and apparatus using multi-layered m...

Overwrite capable magnetooptial recording apparatus

Multilayered magnetooptical recording medium

Magneto-optical reproducing method

Over-write capable magnetooptical recording medium having C/N ratio...

Over write capable magnetooptical recording method, and magnetoopti...

Optical integrated device for magneto-optical reproducing head

Over write capable magnetooptical recording method, and magnetoopti...

Recording magnetooptical recording medium

Optical waveguide device for polarization rotation

Over write capable magnetooptical recording method using two beams,...

Over write capable magnetooptical recording method using two beams,...

Process and apparatus for simultaneous erasure and recording in mag...

Double-layered magnetooptical recording medium

All solid type electrochromic display element

All solid state electrochromic device

Electrochromic element