Inventor · disambiguated record
Yooji Maruyama
Also filed as: MARUYAMA YOOJI
8 granted patents·1 pending application·151 citations·filing 1983–2002
89Inventor score
Files withHITACHI LTD8
Top patents by PatentIndex Score
9 records- 0196US5481386AFlying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameHITACHI LTD·Filed 1994·Granted Jan 2, 1996·67 cites·8 claims
- 0285US6611487B2Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameHITACHI LTD·Filed 2002·Granted Aug 26, 2003·14 cites·9 claims
- 0377US5715226AFlying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameHITACHI LTD·Filed 1995·Granted Feb 3, 1998·19 cites·17 claims
- 0469US6185177B1Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameHITACHI LTD·Filed 2000·Granted Feb 6, 2001·4 cites·2 claims
- 0563US5995474AFlying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameHITACHI LTD·Filed 1997·Granted Nov 30, 1999·16 cites·7 claims
- 0651US5327371AInformation recording and reproducing apparatusHITACHI LTD·Filed 1992·Granted Jul 5, 1994·14 cites·24 claims
- 0751US5309388ASolid state magnetic memory deviceHITACHI LTD·Filed 1992·Granted May 3, 1994·14 cites·15 claims
- 0837US4503517AMagnetic bubble memory deviceHITACHI LTD·Filed 1983·Granted Mar 5, 1985·3 cites·4 claims
- 0931US2001012244A1Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the sameFiled 1999·Application pending·0 cites
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