Inventor
KAWAMATA TOSHIO
31 patents
⚠️ This page may combine multiple inventors who share the name “KAWAMATA TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI PHOTO FILM CO LTD
30 patentsUS4963433AOct 16, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD72 citations96
US6251509B1Jun 26, 2001
Magnetic tape
FUJI PHOTO FILM CO LTD27 citations92
US5958565ASep 28, 1999
Magnetic recording tape favorably employable for computer data storage
FUJI PHOTO FILM CO LTD31 citations92
US5384175AJan 24, 1995
Magnetic recording disc comprising a non-magnetic underlayer and a magnetic layer comprising ferromagnetic particles and a binder
FUJI PHOTO FILM CO LTD41 citations92
US5358777AOct 25, 1994
Magnetic recording medium comprising an underlayer of non magnetic powder and binder resin and a magnetic layer with a specified Young's modulus
FUJI PHOTO FILM CO LTD36 citations92
US5300314AApr 5, 1994
Process for preparing a magnetic recording medium
FUJI PHOTO FILM CO LTD22 citations92
US5112679AMay 12, 1992
Magnetic disk
FUJI PHOTO FILM CO LTD24 citations92
US4952444AAug 28, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD45 citations92
US4096015AJun 20, 1978
Method of making laminated plastic cards
FUJI PHOTO FILM CO LTD39 citations89
US5370917ADec 6, 1994
Magnetic recording disc comprising magnetic powder and a binder in a container which includes a nonwoven fabric liner comprising polypropylene and rayon fibers
FUJI PHOTO FILM CO LTD19 citations82
US4071362AJan 31, 1978
Electrophotographic copying film
FUJI PHOTO FILM CO LTD30 citations79
US6129979AOct 10, 2000
Magnetic recording medium
FUJI PHOTO FILM CO LTD8 citations74
US5549955AAug 27, 1996
Magnetic recording disk
FUJI PHOTO FILM CO LTD13 citations74
US5455093AOct 3, 1995
Flexible magnetic disk and process for preparing the same
FUJI PHOTO FILM CO LTD8 citations74
US5389418AFeb 14, 1995
Flexible magnetic recording disk and method for preparing the same
FUJI PHOTO FILM CO LTD11 citations74
US5085911AFeb 4, 1992
Flexible magnetic disc with a two layer protective coating which top layer is a ultra violet radiation cured compound with specified elasticity modulus
FUJI PHOTO FILM CO LTD9 citations74
US4654258AMar 31, 1987
Magnetic recording medium
FUJI PHOTO FILM CO LTD10 citations74
US4518626AMay 21, 1985
Process for preparing magnetic recording medium
FUJI PHOTO FILM CO LTD7 citations74
US5049448ASep 17, 1991
Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue
FUJI PHOTO FILM CO LTD7 citations73
US4970121ANov 13, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD8 citations72
US5508117AApr 16, 1996
Magnetic recording medium and production process thereof
FUJI PHOTO FILM CO LTD5 citations63
US5145738ASep 8, 1992
Magnetic recording medium
FUJI PHOTO FILM CO LTD2 citations63
US5011395AApr 30, 1991
Surface smoothing apparatus for magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations63
US4577077AMar 18, 1986
Surface smoothing method for disk-like recording medium
FUJI PHOTO FILM CO LTD3 citations63
US4548772AOct 22, 1985
Surface smoothing method for magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations63
US5178925AJan 12, 1993
Magnetic disc having a magnetic layer with a glass transition temperature of at least 75° C. which contains magnetic metal powder of specified pH and surface area
FUJI PHOTO FILM CO LTD3 citations62
US5057373AOct 15, 1991
Magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations62
US5022519AJun 11, 1991
Flexible disk jacket
FUJI PHOTO FILM CO LTD6 citations62
US5024885AJun 18, 1991
Magnetic recording medium
FUJI PHOTO FILM CO LTD0 citations52
US4992328AFeb 12, 1991
Magnetic recording medium
FUJI PHOTO FILM CO LTD1 citations52