P

Inventor

MURAKAMI YOSHITERU

JP101 patents
⚠️ This page may combine multiple inventors who share the name “MURAKAMI YOSHITERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHARP KK

47 patents
US5933411AAug 3, 1999

Optical recording medium having a wobbling section for recording address information and methods of recording and reproduction using same

SHARP KK54 citations96
US5499229AMar 12, 1996

Track scanning for reproducing address information by crosstalk

SHARP KK92 citations96
US5066381ANov 19, 1991

Target unit

SHARP KK51 citations94
US6295271B1Sep 25, 2001

Optical recording medium having tracks, each track having a plurality of wobble sections/one-side wobble regions

SHARP KK35 citations93
US6147939ANov 14, 2000

Magneto-optical recording medium having intermediate layer of in-plane magnetization

SHARP KK19 citations93
US6143436ANov 7, 2000

Magnetic recording medium and information recording-reproduction method using the same

SHARP KK21 citations93
US6122233ASep 19, 2000

Optical disk having virtually constant width recording track and optical disk apparatus

SHARP KK33 citations93
US5955191ASep 21, 1999

Magneto-optical recording medium and a reproducing method using such a medium

SHARP KK19 citations93
US5901118AMay 4, 1999

Magneto-optical recording medium having a readout layer and a recording layer

SHARP KK20 citations93
US5656385AAug 12, 1997

Magnetic recording medium and information recording-reproduction method using the same

SHARP KK30 citations93
US5586109ADec 17, 1996

Optical memory having narrowed track pitch

SHARP KK28 citations93
US5563852AOct 8, 1996

Magneto-optical recording medium having a readout layer with varying composition and curie temperature

SHARP KK21 citations93
US5486395AJan 23, 1996

Magneto-optical disk

SHARP KK20 citations93
US5452272ASep 19, 1995

Magneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portions

SHARP KK41 citations93
US5059473AOct 22, 1991

Optical recording medium and manufacturing method thereof

SHARP KK33 citations93
US4956243ASep 11, 1990

Optical memory element

SHARP KK26 citations93
US4917751AApr 17, 1990

Method of producing double sided optical memory disks

SHARP KK29 citations93
US4610912ASep 9, 1986

Magneto-optic memory element

SHARP KK31 citations93
US6128274AOct 3, 2000

Optical recording disk capable of suppressing bimetallic effects caused by thermal expansion

SHARP KK37 citations92
US5490131AFeb 6, 1996

Optical disk

SHARP KK31 citations91
US4740947AApr 26, 1988

Dual surface optical memory disc

SHARP KK25 citations91
US4717628AJan 5, 1988

Magnetooptical storage element

SHARP KK20 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
US6178143B1Jan 23, 2001

Magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information

SHARP KK6 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
US5991259ANov 23, 1999

Optical disk with tracking guide of wind and unwind portions

SHARP KK10 citations74
US5985436ANov 16, 1999

Magneto-optical recording medium, magneto-optical recording method, and magneto-optical recording apparatus

SHARP KK8 citations74
US5926444AJul 20, 1999

Magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information

SHARP KK8 citations74
US5922177AJul 13, 1999

Magneto-optical recording medium and producing method thereof

SHARP KK8 citations74
US5909412AJun 1, 1999

Method for reproducing optical disk

SHARP KK12 citations74
US5764601AJun 9, 1998

Method of manufacturing a magneto-optical recording medium having a readout layer with varying composition and curie temperature

SHARP KK11 citations74
US5757734AMay 26, 1998

Magneto-optical recording medium and method for reproducing from same

SHARP KK11 citations74
US5707727AJan 13, 1998

Magneto-optical recording medium

SHARP KK15 citations74
US5705286AJan 6, 1998

Magneto-optical recording medium

SHARP KK10 citations74
US5676854AOct 14, 1997

Optical memory having narrowed track pitch

SHARP KK14 citations74
US5662988ASep 2, 1997

Magneto-optical recording medium

SHARP KK16 citations74
US5631096AMay 20, 1997

Magneto optical memory device

SHARP KK12 citations74
US5615182AMar 25, 1997

Magneto-optical disk and the reproducing method thereof

SHARP KK12 citations74
US5477528ADec 19, 1995

Magneto-optical disk and the reproducing method thereof

SHARP KK9 citations74
US5427833AJun 27, 1995

Magneto-optical recording medium and method for processing the surface

SHARP KK10 citations74
US5331612AJul 19, 1994

Magneto-optical recording apparatus using the magnetic field modulation method

SHARP KK13 citations74
US5328740AJul 12, 1994

Magneto-optical recording medium and method for processing the surface

SHARP KK11 citations74
US5317555AMay 31, 1994

Optical head device utilizing partially overlapping light spots to read information from a readout layer

SHARP KK15 citations74
US5175079ADec 29, 1992

Optical memory device

SHARP KK15 citations74
US4985885AJan 15, 1991

Optical memory device

SHARP KK11 citations74
US4858212AAug 15, 1989

Recording method on magnetooptical disc with laser magnetic field

SHARP KK7 citations74

YAMAMOTO MASAKI

1 patent

NAKANO IKUO

1 patent

IWATA NOBORU

1 patent

Showing the top 50 of 101 patents by PatentIndex Score.