Inventor · disambiguated record
Hiroshi Hirayama
Also filed as: HIRAYAMA HIROSHI
106 granted patents·20 pending applications·1,347 citations·filing 1975–2021
99Inventor score
Files withHITACHI LTD35TOYOTA MOTOR CO LTD9HIRAYAMA HIROSHI8KONICA MINOLTA OPTO INC8KONICA MINOLTA INC7
Top patents by PatentIndex Score
126 records- 0198US6763429B1Method and apparatus for recording and playing back informationHITACHI LTD·Filed 2000·Granted Jul 13, 2004·111 cites·25 claims
- 0296US8102363B2Electrophoresis display device, electrophoresis display device driving method, and electronic apparatusHIRAYAMA HIROSHI·Filed 2008·Granted Jan 24, 2012·40 cites·18 claims
- 0391US8463981B2Storage apparatus having deduplication unitMORI HAJIME·Filed 2010·Granted Jun 11, 2013·19 cites·13 claims
- 0490USRE44086EDisplay substrate, electro-optical device, and electronic apparatusHIRAYAMA HIROSHI·Filed 2010·Granted Mar 19, 2013·6 cites·25 claims
- 0589US5966721ADigital signal recording method and disk reproducing apparatusHITACHI LTD·Filed 1996·Granted Oct 12, 1999·37 cites·16 claims
- 0689US5582805AElectrically heated catalytic apparatusTOYOTA MOTOR CO LTD·Filed 1994·Granted Dec 10, 1996·69 cites·12 claims
- 0788US8639899B2Storage apparatus and control method for redundant data management within tiersKAWAKAMI NORIHIKO·Filed 2011·Granted Jan 28, 2014·13 cites·15 claims
- 0888USRE42308EDisplay substrate, electro-optical device, and electronic apparatusSEIKO EPSON CORP·Filed 2008·Granted Apr 26, 2011·6 cites·18 claims
- 0987US5467648AAir flow rate measuring deviceHITACHI LTD·Filed 1993·Granted Nov 21, 1995·45 cites·11 claims
- 1087US5271906AExhaust emission control apparatus using catalytic converter with hydrocarbon absorbentTOYOTA MOTOR CO LTD·Filed 1992·Granted Dec 21, 1993·66 cites·8 claims
- 1186US8266342B1Storage systemTAKADA MASANORI·Filed 2011·Granted Sep 11, 2012·10 cites·12 claims
- 1286US5958827ASolid solution particle of oxides, a process for producing the same and a catalyst for purifying exhaust gasesTOYOTA MOTOR CO LTD·Filed 1996·Granted Sep 28, 1999·70 cites·28 claims
- 1385US9535004B2Surface plasmon resonance fluorescence analysis method and surface plasmon resonance fluorescence analysis deviceKONICA MINOLTA INC·Filed 2014·Granted Jan 3, 2017·5 cites·8 claims
- 1482US7383815B2Air flow measuring device formed integrally with electronically controlled throttle bodyHITACHI LTD·Filed 2005·Granted Jun 10, 2008·11 cites·13 claims
- 1582US4353730AGranulating processTOYO ENGINEERING CORP·Filed 1980·Granted Oct 12, 1982·31 cites·19 claims
- 1681US10495576B2Surface-plasmon enhanced fluorescence measurement method, surface-plasmon enhanced fluorescence measurement device, and analytical chipKONICA MINOLTA INC·Filed 2015·Granted Dec 3, 2019·2 cites·17 claims
- 1780US7512055B2Objective optical element and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted Mar 31, 2009·4 cites·35 claims
- 1879US3990892AWear resistant and heat resistant alloy steelsFUJIKOSHI KK·Filed 1975·Granted Nov 9, 1976·30 cites·1 claims
- 1978US11215613B2Detection device, detection method using said detection device, and detection chip used in said detection deviceKONICA MINOLTA INC·Filed 2014·Granted Jan 4, 2022·3 cites·8 claims
- 2078US7769921B2Storage apparatus and data transfer methodHITACHI LTD·Filed 2008·Granted Aug 3, 2010·7 cites·14 claims
- 2178US6997162B2Air flow measuring device formed integrally with electronically controlled throttle bodyHITACHI CAR ENG CO LTD·Filed 2003·Granted Feb 14, 2006·18 cites·14 claims
- 2277US12117460B2Temperature adjustment system and temperature adjustment methodOTSUKA PHARMA CO LTD·Filed 2019·Granted Oct 15, 2024·1 cites·12 claims
- 2377US7710444B2Image forming apparatus for forming a latent image on an image carrierSEIKO EPSON CORP·Filed 2006·Granted May 4, 2010·5 cites·8 claims
- 2477US5631415AAir flow rate measuring deviceHITACHI LTD·Filed 1995·Granted May 20, 1997·31 cites·8 claims
- 2576US7773496B2Combination type optical disk medium, its reproduction method and optical disk apparatusHITACHI LTD·Filed 2007·Granted Aug 10, 2010·2 cites·11 claims
- 2675US10360144B2Storage apparatus and non-volatile memory device including a controller to selectively compress data based on an update frequency levelHITACHI LTD·Filed 2015·Granted Jul 23, 2019·5 cites·11 claims
- 2775US8806126B2Storage apparatus, storage system, and data migration methodKAWAKAMI NORIHIKO·Filed 2012·Granted Aug 12, 2014·4 cites·13 claims
- 2875US7106279B2Display substrate, electro-optical device, and electronic apparatusSEIKO EPSON CORP·Filed 2003·Granted Sep 12, 2006·11 cites·18 claims
- 2975US6552461B2Permanent magnet type rotating electric machineHITACHI LTD·Filed 2002·Granted Apr 22, 2003·18 cites·8 claims
- 3074US6681742B1Air flow measuring device formed integrally with electronically controlled throttle bodyHITACHI LTD·Filed 1999·Granted Jan 27, 2004·32 cites·38 claims
- 3174US4353709AGranulation processMITSUI TOATSU CHEMICALS·Filed 1980·Granted Oct 12, 1982·29 cites·4 claims
- 3273US8572342B2Data transfer device with confirmation of write completion and method of controlling the sameARAI MASAHIRO·Filed 2010·Granted Oct 29, 2013·3 cites·25 claims
- 3373US7792007B2Optical device for monitor and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted Sep 7, 2010·2 cites·4 claims
- 3473US7376057B2Disk recording apparatus and disk recording methodHITACHI LTD·Filed 2007·Granted May 20, 2008·2 cites·2 claims
- 3573US6838798B2Permanent magnet type rotating electric machineHITACHI LTD·Filed 2003·Granted Jan 4, 2005·16 cites·6 claims
- 3672US9645926B2Storage system and method for managing file cache and block cache based on access typeHITACHI LTD·Filed 2012·Granted May 9, 2017·3 cites·14 claims
- 3771US9098202B2Storage apparatus and data management methodYOKOI NOBUHIRO·Filed 2012·Granted Aug 4, 2015·4 cites·12 claims
- 3871US8352663B2Data storage apparatus and method of data transferHITACHI LTD·Filed 2008·Granted Jan 8, 2013·5 cites·16 claims
- 3971US5789673AThermal type air flow measuring instrument for internal combustion engineHITACHI LTD·Filed 1995·Granted Aug 4, 1998·34 cites·39 claims
- 4071US5642076ANo turn-on pop noise amplifierNAT SEMICONDUCTOR CORP·Filed 1995·Granted Jun 24, 1997·31 cites·5 claims
- 4169US6806225B1Catalyst for exhaust gas purification, process for producing the same, and method of purifying exhaust gasTOYOTA MOTOR CO LTD·Filed 1999·Granted Oct 19, 2004·37 cites·4 claims
- 4269US5488591AImproved magneto-optical recording apparatus for digital signal informationSEIKO EPSON CORP·Filed 1994·Granted Jan 30, 1996·17 cites·24 claims
- 4369US4354450AJet layer granulatorTOYO ENGINEERING CORP·Filed 1981·Granted Oct 19, 1982·29 cites·17 claims
- 4468US7963161B2Heating resistor type air flow rate measuring device utilizing an auxiliary passageHITACHI LTD·Filed 2008·Granted Jun 21, 2011·6 cites·9 claims
- 4568US6181660B1Digital signal processor circuit for reproduction of digital dataHITACHI LTD·Filed 1998·Granted Jan 30, 2001·21 cites·22 claims
- 4667US9898201B2Non-volatile memory device, and storage apparatus to reduce a read retry occurrence frequency and prevent read performance from loweringHITACHI LTD·Filed 2014·Granted Feb 20, 2018·2 cites·17 claims
- 4767US9817768B2Storage system and data storing methodHITACHI LTD·Filed 2013·Granted Nov 14, 2017·2 cites·8 claims
- 4867US8677167B2Storage apparatus and power control methodKAWAKAMI NORIHIKO·Filed 2010·Granted Mar 18, 2014·2 cites·15 claims
- 4967US6154806AMethod for recording digital signals on multiple-layered disksHITACHI LTD·Filed 1999·Granted Nov 28, 2000·11 cites·5 claims
- 5067US6076135AInformation medium having a plurality of recording surfacesHITACHI LTD·Filed 1998·Granted Jun 13, 2000·12 cites·5 claims
Showing the top 50 of 126 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →