Inventor · disambiguated record
Masashi Hayama
Also filed as: HAYAMA MASASHI
8 granted patents·52 citations·filing 1979–1990
85Inventor score
Top patents by PatentIndex Score
8 records- 0169US4420537AMagnetic recording medium having cobalt adsorbed iron oxide layerTDK ELECTRONICS CO LTD·Filed 1980·Granted Dec 13, 1983·17 cites·1 claims
- 0253US4285825AMethod of producing magnetic coating material for magnetic recording mediaTDK ELECTRONICS CO LTD·Filed 1979·Granted Aug 25, 1981·12 cites·3 claims
- 0344US4689263AMagnetic recording mediumTDK CORP·Filed 1984·Granted Aug 25, 1987·6 cites·2 claims
- 0439US4379803AMagnetic recording mediumTDK ELECTRONICS CO LTD·Filed 1981·Granted Apr 12, 1983·6 cites·6 claims
- 0537US5043210AMagnetic recording media having two magnetic layers; the first for recording a baseboard signal and the second for recording a superimposed surface and signalTDK CORP·Filed 1990·Granted Aug 27, 1991·4 cites·8 claims
- 0631US4394420AMagnetic recording mediumTDK ELECTRONICS CO LTD·Filed 1981·Granted Jul 19, 1983·2 cites·1 claims
- 0731US4388369AMagnetic recording mediumTDK ELECTRONICS CO LTD·Filed 1982·Granted Jun 14, 1983·2 cites·1 claims
- 0830US4423114AMagnetic powder for magnetic recording mediumTDK ELECTRONICS CO LTD·Filed 1981·Granted Dec 27, 1983·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →