Inventor · disambiguated record
Hiroshi Yasuoka
Also filed as: YASUOKA HIROSHI
11 granted patents·176 citations·filing 1988–2007
90Inventor score
Top patents by PatentIndex Score
11 records- 0190US4984231AOptical information phase change recording medium having double protective layerHITACHI LTD·Filed 1988·Granted Jan 8, 1991·42 cites·20 claims
- 0282US5109374ASmall-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording mediumHITACHI LTD·Filed 1989·Granted Apr 28, 1992·28 cites·21 claims
- 0378US5235591AStack type optical disc apparatus, sealed and separate type optical head therefor and optical disc mediumHITACHI LTD·Filed 1991·Granted Aug 10, 1993·27 cites·34 claims
- 0474US5574881AHigh capacity data storage method and system using independently controlled heads and circuitry for monitoring access frequency of data recordsHITACHI LTD·Filed 1995·Granted Nov 12, 1996·28 cites·6 claims
- 0569US5257256ARecording waveform for mark-length modulation optical recordingHITACHI LTD·Filed 1991·Granted Oct 26, 1993·18 cites·22 claims
- 0666US8128731B2Method for separating and enriching isotope material, multistage rotor, and apparatus for separating and enriching isotope materialMASHIMO TSUTOMU·Filed 2007·Granted Mar 6, 2012·1 cites·15 claims
- 0757US5038338ARecording waveform for mark-length modulation optical recordingHITACHI LTD·Filed 1990·Granted Aug 6, 1991·11 cites·10 claims
- 0852US5084857AInformation recording method using a modulated recording beam at high, intermediate and low power levelsHITACHI LTD·Filed 1989·Granted Jan 28, 1992·8 cites·9 claims
- 0949US5404348AMethod for recording and reproducing information using at least two energy beamsHITACHI LTD·Filed 1990·Granted Apr 4, 1995·8 cites·29 claims
- 1045US7282610B2Method of producing aromatic amine compound having alkylthio groupFUJIFILM CORP·Filed 2004·Granted Oct 16, 2007·0 cites·16 claims
- 1143US4982396AInformation recording medium and apparatus using reversible phase changeHITACHI LTD·Filed 1988·Granted Jan 1, 1991·5 cites·39 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →