Inventor
EJIRI KIYOMI
JP78 patents
⚠️ This page may combine multiple inventors who share the name “EJIRI KIYOMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI PHOTO FILM CO LTD
48 patentsUS5645917AJul 8, 1997
Magnetic recording medium
FUJI PHOTO FILM CO LTD148 citations99
US5827600AOct 27, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD122 citations98
US5763046AJun 9, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD25 citations96
US5496607AMar 5, 1996
Magnetic recording medium
FUJI PHOTO FILM CO LTD144 citations95
US6835451B2Dec 28, 2004
Magnetic recording medium
FUJI PHOTO FILM CO LTD43 citations93
US6521361B2Feb 18, 2003
Magnetic recording medium having specified acicular ratio relationship between non-magnetic and ferromagnetic particles
FUJI PHOTO FILM CO LTD19 citations93
US6210775B1Apr 3, 2001
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations93
US5455112AOct 3, 1995
Magnetic recording medium
FUJI PHOTO FILM CO LTD27 citations93
US5258223ANov 2, 1993
Magnetic recording medium
FUJI PHOTO FILM CO LTD50 citations93
US6579592B1Jun 17, 2003
Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensity
FUJI PHOTO FILM CO LTD26 citations92
US6074724AJun 13, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD24 citations92
US5718964AFeb 17, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD42 citations92
US5318838AJun 7, 1994
Magnetic recording medium comprising ferromagnetic particles, binder resins and phenyl phosphonic acid
FUJI PHOTO FILM CO LTD33 citations92
US5219670AJun 15, 1993
Magnetic recording medium
FUJI PHOTO FILM CO LTD26 citations92
US6534168B2Mar 18, 2003
Magnetic recording medium comprising a lower layer containing specific flat acicular α-iron oxide powder
FUJI PHOTO FILM CO LTD16 citations84
US6475598B1Nov 5, 2002
Magnetic recording medium
FUJI PHOTO FILM CO LTD17 citations84
US6383605B1May 7, 2002
Magnetic recording medium
FUJI PHOTO FILM CO LTD18 citations84
US5904979AMay 18, 1999
Magnetic recording system
FUJI PHOTO FILM CO LTD17 citations84
US6143403ANov 7, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD8 citations82
US6025082AFeb 15, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations82
US6020022AFeb 1, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD12 citations82
US5985408ANov 16, 1999
Magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations82
US5851622ADec 22, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations82
US5811172ASep 22, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD12 citations82
US5811166ASep 22, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD14 citations82
US5795646AAug 18, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD12 citations82
US5792543AAug 11, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations82
US5780141AJul 14, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD13 citations82
US5756148AMay 26, 1998
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations82
US6773788B2Aug 10, 2004
Magnetic recording medium
FUJI PHOTO FILM CO LTD10 citations74
US6602576B2Aug 5, 2003
Magnetic recording medium
FUJI PHOTO FILM CO LTD7 citations74
US6479131B1Nov 12, 2002
Magnetic recording medium
FUJI PHOTO FILM CO LTD9 citations74
US6428884B1Aug 6, 2002
Magnetic recording medium
FUJI PHOTO FILM CO LTD9 citations74
US6015602AJan 18, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD5 citations74
US5955189ASep 21, 1999
Magnetic recording medium
FUJI PHOTO FILM CO LTD7 citations74
US5672423ASep 30, 1997
Magnetic recording medium having an underlayer containing three different powders
FUJI PHOTO FILM CO LTD14 citations74
US5480716AJan 2, 1996
Magnetic recording medium comprising ferromagnetic particles and a compound with a pyrimidine or tetrazaindene structure
FUJI PHOTO FILM CO LTD12 citations74
US5447782ASep 5, 1995
Magnetic recording medium having a specified thickness relationship between a nonmagnetic underlayer and overcoated magnetic layers
FUJI PHOTO FILM CO LTD18 citations74
US5250354AOct 5, 1993
Magnetic recording medium containing magnetic alloy powder and specified binder resins and having a kerr rotational angle of 5 minutes or more
FUJI PHOTO FILM CO LTD9 citations74
US5176955AJan 5, 1993
Magnetic recording medium comprising ferromagnetic powder having a pH of at least 7 dispersed in a vinyl chloride copolymer using an aromatic phoshoric, phosphonic or sulfonic acid dispersant
FUJI PHOTO FILM CO LTD14 citations74
US5084341AJan 28, 1992
Magnetic recording medium comprising a polyurethane resin having a thio, thiocarboxy or dithiocarboxy group; a vinyl chloride resin containing a polar group and a hyroxy group; and a polyisocyanate compound
FUJI PHOTO FILM CO LTD8 citations74
US4959263ASep 25, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD10 citations74
US4801505AJan 31, 1989
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations74
US4652500AMar 24, 1987
Magnetic recording medium
FUJI PHOTO FILM CO LTD11 citations74
US5096774AMar 17, 1992
Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range
FUJI PHOTO FILM CO LTD9 citations73
US4885208ADec 5, 1989
Magnetic recording medium
FUJI PHOTO FILM CO LTD12 citations73
US5064687ANov 12, 1991
Method for making magnetic recording media
FUJI PHOTO FILM CO LTD13 citations72
US4917947AApr 17, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations68
FUI PHOTO FILM CO LTD
1 patentFUJIFILM CORP
1 patentShowing the top 50 of 78 patents by PatentIndex Score.