Inventor
OHKAWA TAKEHISA
JP7 patents
Patents
7 patentsUS4400435AAug 23, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD20 citations81
US4352859AOct 5, 1982
Magnetic recording medium
TDK ELECTRONICS CO LTD17 citations72
US4416948ANov 22, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD7 citations71
US4416947ANov 22, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD7 citations71
US4409300AOct 11, 1983
Magnetic recording medium
TDK ELECTRONICS CO LTD15 citations71
US4436786AMar 13, 1984
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations60
US4579780AApr 1, 1986
Magnetic recording medium
TDK ELECTRONICS CO LTD2 citations56