Inventor
SUMIYA KENJI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “SUMIYA KENJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
11 patentsUS4536444AAug 20, 1985
Magnetic recording medium
HITACHI MAXELL35 citations92
US5069973ADec 3, 1991
Magnetic recording medium
HITACHI MAXELL20 citations82
US4830923AMay 16, 1989
Magnetic recording medium
HITACHI MAXELL16 citations73
US4803125AFeb 7, 1989
Magnetic recording medium
HITACHI MAXELL12 citations73
US4659633AApr 21, 1987
Magnetic recording medium
HITACHI MAXELL13 citations73
US5480702AJan 2, 1996
Article having indicia-receiving layer
HITACHI MAXELL8 citations72
US4741952AMay 3, 1988
Magnetic recording medium
HITACHI MAXELL5 citations62
US4698279AOct 6, 1987
Magnetic recording medium
HITACHI MAXELL3 citations62
US4668587AMay 26, 1987
Magnetic recording medium
HITACHI MAXELL4 citations62
US4895763AJan 23, 1990
Magnetic recording medium and non-aqueous suspension of inorganic solid particles for use in the production of the same
HITACHI MAXELL2 citations60
US5110680AMay 5, 1992
Magnetic recording medium
HITACHI MAXELL1 citations52