P

Inventor

YASUNAGA TADASHI

JP47 patents
⚠️ This page may combine multiple inventors who share the name “YASUNAGA TADASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJI PHOTO FILM CO LTD

42 patents
US6909563B2Jun 21, 2005

Master carrier for magnetic transfer

FUJI PHOTO FILM CO LTD25 citations92
US5122389AJun 16, 1992

Vacuum evaporation method and apparatus

FUJI PHOTO FILM CO LTD26 citations92
US7193796B2Mar 20, 2007

Patterned master carrier for magnetic transfer, manufacturing method thereof, magnetic transfer method, recording medium, and magnetic recording and reproduction apparatus

FUJI PHOTO FILM CO LTD11 citations84
US7149042B2Dec 12, 2006

Master carrier for magnetic transfer

FUJI PHOTO FILM CO LTD7 citations74
US6950252B2Sep 27, 2005

Master carrier for magnetic transfer

FUJI PHOTO FILM CO LTD8 citations74
US6887593B2May 3, 2005

Master information carrier for magnetic transfer

FUJI PHOTO FILM CO LTD10 citations74
US6816327B2Nov 9, 2004

Master information carrier for magnetic transfer and magnetic transfer method

FUJI PHOTO FILM CO LTD8 citations74
US5560995AOct 1, 1996

Magnetic recording medium having a ferromagnetic metal thin film upon which is coated a phosphorous and fluorine containing composition

FUJI PHOTO FILM CO LTD15 citations74
US5556707ASep 17, 1996

Magnetic recording medium having a lubricant comprising a phosphoric acid monoester and a fluorocarboxylic acid ester

FUJI PHOTO FILM CO LTD14 citations74
US5489480AFeb 6, 1996

Magnetic recording medium and process for producing the same

FUJI PHOTO FILM CO LTD13 citations74
US5405689AApr 11, 1995

Magnetic recording medium

FUJI PHOTO FILM CO LTD9 citations74
US5334413AAug 2, 1994

Method for preparing a magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74
US5322733AJun 21, 1994

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74
US4988535AJan 29, 1991

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74
US4873154AOct 10, 1989

Magnetic recording medium containing Fe, Co, N and O

FUJI PHOTO FILM CO LTD7 citations74
US4801500AJan 31, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD9 citations74
US4713262ADec 15, 1987

Manufacturing method for a magnetic recording medium

FUJI PHOTO FILM CO LTD8 citations74
US4673610AJun 16, 1987

Magnetic recording medium having iron nitride recording layer

FUJI PHOTO FILM CO LTD9 citations74
US4990361AFeb 5, 1991

Method for producing magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations73
US4876113AOct 24, 1989

Method for producing magnetic recording media

FUJI PHOTO FILM CO LTD9 citations73
US5123376AJun 23, 1992

Apparatus for manufacturing magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations72
US5112669AMay 12, 1992

Magnetic recording medium

FUJI PHOTO FILM CO LTD6 citations72
US4983421AJan 8, 1991

Method for producing magnetic recording media

FUJI PHOTO FILM CO LTD9 citations72
US7187510B2Mar 6, 2007

Method of magnetic transfer to flexible medium

FUJI PHOTO FILM CO LTD6 citations63
US7094481B2Aug 22, 2006

Master information carrier for magnetic transfer and magnetic transfer method

FUJI PHOTO FILM CO LTD2 citations63
US7054082B2May 30, 2006

Magnetic transfer method for a high-density magnetic recording medium

FUJI PHOTO FILM CO LTD4 citations63
US6911270B2Jun 28, 2005

Master information carrier for magnetic transfer

FUJI PHOTO FILM CO LTD3 citations63
US6906877B2Jun 14, 2005

Magnetic transfer method for a high-density magnetic recording medium

FUJI PHOTO FILM CO LTD2 citations63
US5567524AOct 22, 1996

Magnetic recording medium having a cobalt thin film magnetic layer, carbon protective layer, and fluorolubricant layer

FUJI PHOTO FILM CO LTD2 citations63
US5492764AFeb 20, 1996

Magnetic recording medium having a protective layer containing a tetrazaindene or thiouracil cyclic compound and a fluorine compound

FUJI PHOTO FILM CO LTD4 citations63
US5114778AMay 19, 1992

Magnetic recording medium

FUJI PHOTO FILM CO LTD6 citations63
US4885189ADec 5, 1989

Method of producing magnetic recording media

FUJI PHOTO FILM CO LTD3 citations63
US4724156AFeb 9, 1988

Method of manufacturing magnetic recording medium

FUJI PHOTO FILM CO LTD2 citations63
US4702938AOct 27, 1987

Process for producing magnetic recording material

FUJI PHOTO FILM CO LTD4 citations63
US5503943AApr 2, 1996

Magnetic recording medium

FUJI PHOTO FILM CO LTD4 citations62
US4948626AAug 14, 1990

Method for producing thin-film magnetic recording medium

FUJI PHOTO FILM CO LTD3 citations62
US4935605AJun 19, 1990

Apparatus for correcting curl of magnetic recording medium

FUJI PHOTO FILM CO LTD6 citations62
US4923748AMay 8, 1990

Magnetic recording medium

FUJI PHOTO FILM CO LTD3 citations62
US5069932ADec 3, 1991

Method of winding up a magnetic recording medium

FUJI PHOTO FILM CO LTD0 citations52
US4956229ASep 11, 1990

Magnetic recording medium

FUJI PHOTO FILM CO LTD1 citations52
US4835068AMay 30, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD0 citations52
US5069933ADec 3, 1991

Method for making magnetic recording media

FUJI PHOTO FILM CO LTD0 citations51

FUJIFILM CORP

5 patents
US7477463B2Jan 13, 2009

Master information carrier for magnetic transfer

FUJIFILM CORP2 citations63
US7522362B2Apr 21, 2009

Amplitude servo pattern, magnetic recording medium and the manufacturing method, patterned magnetic transfer master substrate used in the manufacturing method, and magnetic recording/reproducing apparatus

FUJIFILM CORP3 citations62
US7465383B2Dec 16, 2008

Master information carrier for magnetic transfer and its production method

FUJIFILM CORP0 citations52
US7365926B2Apr 29, 2008

Signal processing method of magnetic recording medium and magnetic record reproduction apparatus

FUJIFILM CORP0 citations52
US7359133B2Apr 15, 2008

Magnetic recording medium and drive apparatus therefor

FUJIFILM CORP1 citations52