Inventor · disambiguated record
Ryoichi Hirota
Also filed as: HIROTA RYOICHI
3 granted patents·55 citations·filing 1977–1991
72Inventor score
Top patents by PatentIndex Score
3 records- 0188US4142131AColor picture tubeHITACHI LTD·Filed 1977·Granted Feb 27, 1979·29 cites·15 claims
- 0270US5179547APhase change optical information recording medium including means for preventing movement of the recorded portionPIONEER ELECTRONIC CORP·Filed 1991·Granted Jan 12, 1993·21 cites·17 claims
- 0346US4096462ADeflection yoke device for use in color television receiver setsHITACHI LTD·Filed 1977·Granted Jun 20, 1978·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →