Inventor
KASUGA AKIRA
JP33 patents
⚠️ This page may combine multiple inventors who share the name “KASUGA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI PHOTO FILM CO LTD
31 patentsUS4784914ANov 15, 1988
Magnetic recording medium
FUJI PHOTO FILM CO LTD58 citations96
US4916024AApr 10, 1990
Magnetic recording medium
FUJI PHOTO FILM CO LTD23 citations93
US4571364AFeb 18, 1986
Magnetic recording medium
FUJI PHOTO FILM CO LTD34 citations93
US4075384AFeb 21, 1978
Magnetic recording tapes with two-layered magnetic coating
FUJI PHOTO FILM CO LTD50 citations93
US5958565ASep 28, 1999
Magnetic recording tape favorably employable for computer data storage
FUJI PHOTO FILM CO LTD31 citations92
US4784907ANov 15, 1988
Magnetic recording medium
FUJI PHOTO FILM CO LTD41 citations92
US4537833AAug 27, 1985
Magnetic recording medium
FUJI PHOTO FILM CO LTD27 citations92
US4465737AAug 14, 1984
Magnetic recording medium
FUJI PHOTO FILM CO LTD30 citations92
US4455345AJun 19, 1984
Magnetic recording medium
FUJI PHOTO FILM CO LTD33 citations92
US4407901AOct 4, 1983
Magnetic recording medium
FUJI PHOTO FILM CO LTD36 citations92
US4496626AJan 29, 1985
Magnetic recording medium
FUJI PHOTO FILM CO LTD20 citations82
US4431712AFeb 14, 1984
Magnetic recording medium of ferromagnetic particles and binder
FUJI PHOTO FILM CO LTD21 citations82
US4091158AMay 23, 1978
Magnetic recording members
FUJI PHOTO FILM CO LTD21 citations82
US5091268AFeb 25, 1992
Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition
FUJI PHOTO FILM CO LTD12 citations74
US4801505AJan 31, 1989
Magnetic recording medium
FUJI PHOTO FILM CO LTD15 citations74
US4701364AOct 20, 1987
Tape for cleaning magnetic head
FUJI PHOTO FILM CO LTD14 citations74
US4696859ASep 29, 1987
Magnetic recording medium
FUJI PHOTO FILM CO LTD8 citations74
US4652958AMar 24, 1987
Tape for cleaning magnetic head
FUJI PHOTO FILM CO LTD12 citations74
US4411956AOct 25, 1983
Magnetic recording medium
FUJI PHOTO FILM CO LTD7 citations74
US4132827AJan 2, 1979
Magnetic recording substance
FUJI PHOTO FILM CO LTD14 citations74
US4003743AJan 18, 1977
Process for production of motion picture film with sound track containing p-toluenesulfonic acid and glacial acetic acid
FUJI PHOTO FILM CO LTD7 citations74
US4687705AAug 18, 1987
Magnetic recording medium
FUJI PHOTO FILM CO LTD6 citations63
US4661377AApr 28, 1987
Process for producing a magnetic recording medium having an improved dimensional stability
FUJI PHOTO FILM CO LTD5 citations63
US4409299AOct 11, 1983
Magnetic recording medium
FUJI PHOTO FILM CO LTD2 citations63
US4409291AOct 11, 1983
Magnetic recording medium
FUJI PHOTO FILM CO LTD5 citations63
US6620483B2Sep 16, 2003
Magnetic recording medium
FUJI PHOTO FILM CO LTD5 citations62
US5041336AAug 20, 1991
Magnetic recording medium using a binder resin containing a polar group, and a lubricant system comprising two types of fatty acid esters and one fatty acid
FUJI PHOTO FILM CO LTD2 citations62
US4646179AFeb 24, 1987
Flexible magnetic disc, positioning apparatus and method permitting improved head contact
FUJI PHOTO FILM CO LTD3 citations62
US4481253ANov 6, 1984
Process for preparing ferromagnetic metal powder and a magnetic recording medium including the powder
FUJI PHOTO FILM CO LTD4 citations62
US5015498AMay 14, 1991
Method for preparing a magnetic recording medium
FUJI PHOTO FILM CO LTD1 citations50
US4030685AJun 21, 1977
Magnetic tape magazine
FUJI PHOTO FILM CO LTD1 citations50