Inventor · disambiguated record
Toyoji Okuwaki
Also filed as: OKUWAKI TOYOJI
6 granted patents·193 citations·filing 1984–1994
86Inventor score
Technology areasG11B
Files withHITACHI LTD6
Top patents by PatentIndex Score
6 records- 0195US4651242AMagnetic disk apparatusHITACHI LTD·Filed 1984·Granted Mar 17, 1987·54 cites·3 claims
- 0289US4840844AMagnetic recording mediumHITACHI LTD·Filed 1987·Granted Jun 20, 1989·38 cites·18 claims
- 0387US5060098AMagnetic recorder provided with a magnetic head slider having a non-magnetic oxide of spinel structureHITACHI LTD·Filed 1989·Granted Oct 22, 1991·35 cites·5 claims
- 0485US5020041AMagneto-optical memory apparatus having a floating magnetic headHITACHI LTD·Filed 1988·Granted May 28, 1991·31 cites·23 claims
- 0574US5285343AMagnetic disk with surface protective layer having convex portions and magnetic disk apparatus including such a magnetic diskHITACHI LTD·Filed 1990·Granted Feb 8, 1994·26 cites·20 claims
- 0654US5686177AMagnetic recording mediumHITACHI LTD·Filed 1994·Granted Nov 11, 1997·9 cites·8 claims
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