Inventor
NAKAYAMA JUNICHIRO
JP92 patents
Patents
50 patentsUS5933411AAug 3, 1999
Optical recording medium having a wobbling section for recording address information and methods of recording and reproduction using same
SHARP KK54 citations96
US5659537AAug 19, 1997
Magneto-optical recording medium and method of reproducing from same
SHARP KK54 citations96
US6677924B2Jan 13, 2004
Liquid crystal data display device
SHARP KK46 citations93
US6295271B1Sep 25, 2001
Optical recording medium having tracks, each track having a plurality of wobble sections/one-side wobble regions
SHARP KK35 citations93
US5674583AOct 7, 1997
Optical recording medium and manufacturing method thereof
SHARP KK31 citations93
US5644566AJul 1, 1997
Magneto-optical recording medium
SHARP KK44 citations93
US5640374AJun 17, 1997
Magneto-optical recording medium having intermediate layer of in-plane magnetization and method of reproducing from the medium
SHARP KK27 citations93
US5633838AMay 27, 1997
Magneto-optical recording medium having two reproduction layers and a method for reproducing thereof
SHARP KK20 citations93
US5428585AJun 27, 1995
Magneto-optical recording medium comprising first, second and third magnetic layers and method of recording on same
SHARP KK40 citations93
US5386400AJan 31, 1995
Magneto-optical head device having a lubricated member
SHARP KK33 citations93
US5338646AAug 16, 1994
Optical memory device having an improved light reflection or optical memory layer
SHARP KK20 citations93
US5278810AJan 11, 1994
Magneto-optical recording medium whereon recording is carried out with an overwriting function
SHARP KK55 citations93
US5233597AAug 3, 1993
Magneto-optical disk having a layer of varying thickness
SHARP KK34 citations93
US5231613AJul 27, 1993
Magneto-optical recording device
SHARP KK27 citations93
US5059473AOct 22, 1991
Optical recording medium and manufacturing method thereof
SHARP KK33 citations93
US6130504AOct 10, 2000
Plasma addressing display device and method for producing the same
SHARP KK21 citations89
US5939187AAug 17, 1999
Magneto-optical recording medium
SHARP KK18 citations84
US5068841ANov 26, 1991
Magneto-optical recording/reproducing device
SHARP KK21 citations82
US6665235B2Dec 16, 2003
Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium
SHARP KK7 citations74
US6261707B1Jul 17, 2001
Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium
SHARP KK14 citations74
US6177762B1Jan 23, 2001
Plasma display panel having mixed gases to counteract sputtering effects
SHARP KK8 citations74
US6042954AMar 28, 2000
Magneto-optical recording medium
SHARP KK7 citations74
US6031816AFeb 29, 2000
Optical recording medium, method for manufacturing the same, and optical information recording and reproducing device used with respect to the same
SHARP KK8 citations74
US5989671ANov 23, 1999
Optical recording medium and manufacturing method thereof
SHARP KK10 citations74
US5991259ANov 23, 1999
Optical disk with tracking guide of wind and unwind portions
SHARP KK10 citations74
US5936916AAug 10, 1999
Magneto-optical recording medium with multiple magnetic layers and methods related thereto
SHARP KK7 citations74
US5909412AJun 1, 1999
Method for reproducing optical disk
SHARP KK12 citations74
US5889740AMar 30, 1999
Magneto-optical recording medium and magneto-optical recording method
SHARP KK9 citations74
US5838645ANov 17, 1998
Magneto-optical recording medium having a plurality of magnetic layers
SHARP KK9 citations74
US5825723AOct 20, 1998
Magneto-optical recording medium having a reproducing layer with different magnetization directions in different temperature ranges
SHARP KK10 citations74
US5707727AJan 13, 1998
Magneto-optical recording medium
SHARP KK15 citations74
US5684764ANov 4, 1997
Magneto-optical recording medium having a plurality of magnetic layers
SHARP KK11 citations74
US5662988ASep 2, 1997
Magneto-optical recording medium
SHARP KK16 citations74
US5615182AMar 25, 1997
Magneto-optical disk and the reproducing method thereof
SHARP KK12 citations74
US5615180AMar 25, 1997
Magneto-optical recording medium and magneto-optical recording apparatus capable of performing a light-modulation overwriting operation
SHARP KK9 citations74
US5530685AJun 25, 1996
Magneto-optical recording apparatus having paired devices for applying external magnetic fields
SHARP KK12 citations74
US5498485AMar 12, 1996
Magneto-optical recording medium and manufacturing method thereof
SHARP KK7 citations74
US5477528ADec 19, 1995
Magneto-optical disk and the reproducing method thereof
SHARP KK9 citations74
US5453884ASep 26, 1995
Magneto-optical recording medium
SHARP KK11 citations74
US5427833AJun 27, 1995
Magneto-optical recording medium and method for processing the surface
SHARP KK10 citations74
US5422865AJun 6, 1995
Light modulation method for magneto-optical recording device
SHARP KK12 citations74
US5347510ASep 13, 1994
Method of manufacturing a master plate where its guide groove has an inclined angle
SHARP KK13 citations74
US5336531AAug 9, 1994
Magneto-optical disk and manufacturing methods thereof
SHARP KK17 citations74
US5328740AJul 12, 1994
Magneto-optical recording medium and method for processing the surface
SHARP KK11 citations74
US5303100AApr 12, 1994
Magnetic disk device with floating-type magnetic head
SHARP KK12 citations74
US5214636AMay 25, 1993
Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer
SHARP KK11 citations74
US5187703AFeb 16, 1993
Magneto-optical multilayer recording disk and method of reproducing the same
SHARP KK11 citations74
US5117415AMay 26, 1992
Optical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card
SHARP KK9 citations74
US5107471AApr 21, 1992
Magnetic head having a rectangular configuration for use in a magneto-optical recording system
SHARP KK12 citations74
US5077714ADec 31, 1991
Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam
SHARP KK9 citations74
Showing the top 50 of 92 patents by PatentIndex Score.