Inventor
MARUTA FUMIO
10 patents
⚠️ This page may combine multiple inventors who share the name “MARUTA FUMIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
5 patentsUS4880687ANov 14, 1989
Magnetic recording medium
TDK CORP59 citations96
US5069967ADec 3, 1991
Magnetic recording medium
TDK CORP26 citations92
US4889767ADec 26, 1989
Magnetic recording medium
TDK CORP41 citations92
US4816334AMar 28, 1989
Magnetic recording medium
TDK CORP49 citations92
US5080971AJan 14, 1992
Magnetic recording medium
TDK CORP20 citations82
TDK ELECTRONICS CO LTD
5 patentsUS4387136AJun 7, 1983
Magnetic recording medium and apparatus for preparing the same
TDK ELECTRONICS CO LTD19 citations81
US4371590AFeb 1, 1983
Magnetic recording medium with stepwise orientation of deposited metallic particles
TDK ELECTRONICS CO LTD17 citations69
US4452864AJun 5, 1984
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations61
US4400444AAug 23, 1983
Magnetic recording media and process of producing them
TDK ELECTRONICS CO LTD4 citations61
US4302510ANov 24, 1981
Magnetic recording medium
TDK ELECTRONICS CO LTD4 citations59