Inventor · disambiguated record
Hitoshi Yanagihara
Also filed as: YAMADA JUN · YANAGIHARA HITOSHI
7 granted patents·140 citations·filing 1978–1998
87Inventor score
Top patents by PatentIndex Score
7 records- 0186US4799118AThin film magnetic headHITACHI LTD·Filed 1986·Granted Jan 17, 1989·36 cites·12 claims
- 0274US4201964AElastic surface wave deviceHITACHI LTD·Filed 1978·Granted May 6, 1980·16 cites·6 claims
- 0373US5539710AVideo optical disk system compatible with both read only and writable optical disks having the same recording formatHITACHI LTD·Filed 1993·Granted Jul 23, 1996·24 cites·17 claims
- 0472US4991163AOptical information medium with sample mark area and multiple transcription preventionHITACHI LTD·Filed 1988·Granted Feb 5, 1991·20 cites·8 claims
- 0568US4996682AOptical information medium having paired wobble pitts with continuous groove therebetweenHITACHI LTD·Filed 1988·Granted Feb 26, 1991·15 cites·14 claims
- 0668US4396851ASurface acoustic wave deviceHITACHI LTD·Filed 1980·Granted Aug 2, 1983·15 cites·4 claims
- 0755US6057630ASurface acoustic wave deviceHITACHI MEDIA ELECTRON KK·Filed 1998·Granted May 2, 2000·14 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →