Inventor

ISHIDA TATSUAKI

JP47 patents

Patents

47 patents

US6347016B1Feb 12, 2002

Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD292 citations98

US6529341B1Mar 4, 2003

Magnetic recording/reproduction device using preformat information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD67 citations96

US6606208B2Aug 12, 2003

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations92

US6567227B2May 20, 2003

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations92

US6242085B1Jun 5, 2001

Magnetic recording medium and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations92

US5901012AMay 4, 1999

Magnetic recording and reproduction apparatus ring-type magnetic head for recording signals to recording medium having oblique axis of easy magnetization

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations92

US6466385B1Oct 15, 2002

Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations90

US6850377B2Feb 1, 2005

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations82

US6606209B2Aug 12, 2003

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations82

US7095575B2Aug 22, 2006

Magnetic disk apparatus, method for determining data track pitch, and self-servo write method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74

US6898032B2May 24, 2005

Method and apparatus for magnetic printing

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations74

US6785070B2Aug 31, 2004

Magnetic transcription device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74

US6088178AJul 11, 2000

Magnetic recording and reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74

US5912783AJun 15, 1999

Magnetic recording and reproducing apparatus having ring-type magnetic head with metallic soft magnetic films of differing thicknesses

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74

US5691008ANov 25, 1997

Magnetic recording media fabrication method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74

US5679410AOct 21, 1997

Continuous fabrication of thin film magnetic recording medium with vacuum deposition

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations74

US5665460ASep 9, 1997

Magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74

US5569523AOct 29, 1996

Magnetic recording medium having a ferromagnetic thin film in which 70% to 90% of the total magnetic particles have residual magnetization vectors within ±10° of the easy axis direction

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74

US5534324AJul 9, 1996

Magnetic recording medium and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations74

US5472506ADec 5, 1995

Method and apparatus for producing magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74

US5418059AMay 23, 1995

Magnetic recording medium and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations74

US5087476AFeb 11, 1992

Method of producing thin film

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations74

US7057834B2Jun 6, 2006

Master information carrier and method for manufacturing magnetic disc using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73

US6914735B2Jul 5, 2005

Manufacturing method for magnetic recording medium, and master information carrier used therefor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations73

US6858329B2Feb 22, 2005

Master disc and method for manufacturing magnetic disc using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations73

US6714367B1Mar 30, 2004

Master information medium and method of master information recording

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73

US6590727B2Jul 8, 2003

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations73

US6587290B2Jul 1, 2003

Master information carrier, method for producing the carrier, and method apparatus for writing information into magnetic record medium using the carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations73

US6665133B1Dec 16, 2003

Magnetic transfer method and magnetic transfer device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations72

US6980380B2Dec 27, 2005

Master information carrier and method for manufacturing magnetic disk

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63

US5679166AOct 21, 1997

Magnetic recording media, magnetic recording media fabrication method, and fabrication equipment

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63

US5554440ASep 10, 1996

Magnetic recording medium and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63

US5549936AAug 27, 1996

Manufacturing method of magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63

US5458914AOct 17, 1995

Method for producing magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63

US5427869AJun 27, 1995

Magnetic recording medium and method for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63

US5298282AMar 29, 1994

Production of magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations63

US7061703B2Jun 13, 2006

Master information carrier and method for manufacturing magnetic disc using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62

US6646820B1Nov 11, 2003

Method for recording magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations62

US5202149AApr 13, 1993

Method for making a magnetic recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations62

US6994029B2Feb 7, 2006

Magnetic transfer method and magnetic transfer device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations61

US6821869B2Nov 23, 2004

Photomask, method of generating resist pattern, and method of fabricating master information carrier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations61

US6909565B2Jun 21, 2005

Magnetic transfer method and magnetic transfer apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations52

US6781777B2Aug 24, 2004

Master information carrier and method for manufacturing information recording medium using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52

US5433999AJul 18, 1995

Magnetic recording medium comprising specific backcoat layer

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations41

ISHIDA TATSUAKI

Patents

Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier

Magnetic recording/reproduction device using preformat information

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

Magnetic recording medium and method for producing the same

Magnetic recording and reproduction apparatus ring-type magnetic head for recording signals to recording medium having oblique axis of easy magnetization

Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track

Master information carrier/magnetic recording medium defect inspection method

Master information magnetic recorder

Master information support

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

Magnetic disk apparatus, method for determining data track pitch, and self-servo write method

Method and apparatus for magnetic printing

Magnetic transcription device

Magnetic recording and reproducing apparatus

Magnetic recording and reproducing apparatus having ring-type magnetic head with metallic soft magnetic films of differing thicknesses

Magnetic recording media fabrication method

Continuous fabrication of thin film magnetic recording medium with vacuum deposition

Magnetic recording medium

Magnetic recording medium having a ferromagnetic thin film in which 70% to 90% of the total magnetic particles have residual magnetization vectors within ±10° of the easy axis direction

Magnetic recording medium and method for producing the same

Method and apparatus for producing magnetic recording medium

Magnetic recording medium and method for producing the same

Method of producing thin film

Master information carrier and method for manufacturing magnetic disc using the same

Manufacturing method for magnetic recording medium, and master information carrier used therefor

Master disc and method for manufacturing magnetic disc using the same

Master information medium and method of master information recording

Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier

Master information carrier, method for producing the carrier, and method apparatus for writing information into magnetic record medium using the carrier

Magnetic transfer method and magnetic transfer device

Master information carrier and method for manufacturing magnetic disk

Magnetic recording media, magnetic recording media fabrication method, and fabrication equipment

Magnetic recording medium and method for producing the same

Manufacturing method of magnetic recording medium

Method for producing magnetic recording medium

Magnetic recording medium and method for producing the same

Production of magnetic recording medium

Master information carrier and method for manufacturing magnetic disc using the same

Method for recording magnetic recording medium

Method for making a magnetic recording medium

Magnetic transfer method and magnetic transfer device

Photomask, method of generating resist pattern, and method of fabricating master information carrier

Magnetic transfer method and magnetic transfer apparatus

Master information carrier and method for manufacturing information recording medium using the same

Magnetic recording medium comprising specific backcoat layer