Inventor
OKUYAMA KIYOTAKA
JP18 patents
⚠️ This page may combine multiple inventors who share the name “OKUYAMA KIYOTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK ELECTRONICS CO LTD
11 patentsUS4336310AJun 22, 1982
Magnetic recording medium and preparation thereof
TDK ELECTRONICS CO LTD26 citations81
US4361621ANov 30, 1982
Magnetic recording medium
TDK ELECTRONICS CO LTD10 citations73
US4238548ADec 9, 1980
Magnetic recording medium
TDK ELECTRONICS CO LTD6 citations73
US4391864AJul 5, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD5 citations62
US4389458AJun 21, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD3 citations62
US4370384AJan 25, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations62
US4367264AJan 4, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD3 citations62
US4357391ANov 2, 1982
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations62
US4323628AApr 6, 1982
Magnetic recording medium
TDK ELECTRONICS CO LTD5 citations62
US4396659AAug 2, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations61
US4404259ASep 13, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD1 citations51
TDK CORP
7 patentsUS5225281AJul 6, 1993
Magnetic recording medium comprising a magnetic coating containing magnetic powder obtained from a process of coating iron oxide powder with silicon, zirconium and aluminum compounds and reducing
TDK CORP17 citations73
US4460651AJul 17, 1984
Magnetic recording medium
TDK CORP7 citations71
US4609588ASep 2, 1986
Magnetic recording medium
TDK CORP4 citations61
US4459319AJul 10, 1984
Process for producing a magnetic recording medium
TDK CORP3 citations60
US5514463AMay 7, 1996
Magnetic recording medium
TDK CORP0 citations51
US5351902AOct 4, 1994
8mm video tape cassette
TDK CORP0 citations50
US4600650AJul 15, 1986
Magnetic recording medium
TDK CORP1 citations49