Inventor · disambiguated record
Hisashi Andoh
Also filed as: ANDOH HISASHI
16 granted patents·389 citations·filing 1987–1998
95Inventor score
Top patents by PatentIndex Score
16 records- 0189US5311494AOptical disk apparatus and optical headHITACHI LTD·Filed 1991·Granted May 10, 1994·48 cites·11 claims
- 0283US5572502AOptical disk apparatusHITACHI LTD·Filed 1994·Granted Nov 5, 1996·38 cites·10 claims
- 0383US4773059AInformation recording and reproducing apparatus having recording medium made of alloy which has at least two different crystalline structures in its solid stateHITACHI LTD·Filed 1987·Granted Sep 20, 1988·30 cites·15 claims
- 0476US5475656AOptical disk memory and information processing apparatusHITACHI LTD·Filed 1991·Granted Dec 12, 1995·25 cites·23 claims
- 0576US4836978AMethod for making vacuum circuit breaker electrodesHITACHI LTD·Filed 1987·Granted Jun 6, 1989·25 cites·18 claims
- 0675US5420845AMethods of varying optical properties, optical devices, information recording media and information recording methods and apparatusesHITACHI LTD·Filed 1992·Granted May 30, 1995·39 cites·27 claims
- 0775US5371730AOptical memory and information processing apparatusHITACHI LTD·Filed 1990·Granted Dec 6, 1994·23 cites·23 claims
- 0875US5187052AOptical recording mediumHITACHI LTD·Filed 1992·Granted Feb 16, 1993·23 cites·5 claims
- 0972US5353642ACentrifugal type acceleration measuring deviceKYOWA ELECTRONIC INSTR LTD·Filed 1992·Granted Oct 11, 1994·40 cites·4 claims
- 1072US5317556AInformation processing apparatus and optical head incorporated thereinHITACHI LTD·Filed 1990·Granted May 31, 1994·21 cites·29 claims
- 1172US4907015AThermal printing headHITACHI LTD·Filed 1988·Granted Mar 6, 1990·20 cites·21 claims
- 1264US5484686AOptical recording media and information recording and reproducing unitsHITACHI LTD·Filed 1994·Granted Jan 16, 1996·21 cites·5 claims
- 1363US5583840AROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable diskHITACHI LTD·Filed 1994·Granted Dec 10, 1996·14 cites·36 claims
- 1460US5274612AInformation processor and disk memory used in the sameHITACHI LTD·Filed 1991·Granted Dec 28, 1993·13 cites·12 claims
- 1541US5424163APicture recording method using a dispersant having coloring agent particles contained thereinSONY CORP·Filed 1994·Granted Jun 13, 1995·6 cites·7 claims
- 1632USRE36624EOptical recording media and information recording and reproducing unitsHITACHI LTD·Filed 1998·Granted Mar 21, 2000·3 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →