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Inventor

HAYAMA MASASHI

JP8 patents
⚠️ This page may combine multiple inventors who share the name “HAYAMA MASASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TDK ELECTRONICS CO LTD

6 patents
US4379803AApr 12, 1983

Magnetic recording medium

TDK ELECTRONICS CO LTD6 citations72
US4285825AAug 25, 1981

Method of producing magnetic coating material for magnetic recording media

TDK ELECTRONICS CO LTD12 citations71
US4420537ADec 13, 1983

Magnetic recording medium having cobalt adsorbed iron oxide layer

TDK ELECTRONICS CO LTD17 citations68
US4394420AJul 19, 1983

Magnetic recording medium

TDK ELECTRONICS CO LTD2 citations61
US4388369AJun 14, 1983

Magnetic recording medium

TDK ELECTRONICS CO LTD2 citations61
US4423114ADec 27, 1983

Magnetic powder for magnetic recording medium

TDK ELECTRONICS CO LTD3 citations53

TDK CORP

2 patents
US5043210AAug 27, 1991

Magnetic recording media having two magnetic layers; the first for recording a baseboard signal and the second for recording a superimposed surface and signal

TDK CORP4 citations60
US4689263AAug 25, 1987

Magnetic recording medium

TDK CORP6 citations56